feat: flomni stages

ophyd_devices/__init__.py

@@ -1,9 +1,11 @@
 from .eiger1p5m_csaxs.eiger1p5m import Eiger1p5MDetector
 from .epics import *
+from .galil.fgalil_ophyd import FlomniGalilMotor
+from .galil.fupr_ophyd import FuprGalilMotor
 from .galil.galil_ophyd import GalilMotor
 from .galil.sgalil_ophyd import SGalilMotor
 from .npoint.npoint import NPointAxis
-from .rt_lamni import RtLamniMotor
+from .rt_lamni import RtFlomniMotor, RtLamniMotor
 from .sim.sim import (
     SynAxisMonitor,
     SynAxisOPAAS,

ophyd_devices/epics/__init__.py

@@ -4,6 +4,7 @@ from ophyd.quadem import QuadEM
 from ophyd.sim import SynAxis, SynPeriodicSignal, SynSignal
 
 from .devices.delay_generator_csaxs import DelayGeneratorcSAXS
+from .devices.flomni_sample_storage import FlomniSampleStorage
 from .devices.InsertionDevice import InsertionDevice
 from .devices.slits import SlitH, SlitV
 from .devices.specMotors import (
@@ -20,7 +21,7 @@ from .devices.specMotors import (
     PmMonoBender,
 )
 from .devices.SpmBase import SpmBase
-from .devices.XbpmBase import XbpmBase, XbpmCsaxsOp
 
 # X07MA specific devices
 from .devices.X07MADevices import *
+from .devices.XbpmBase import XbpmBase, XbpmCsaxsOp

ophyd_devices/epics/devices/__init__.py

@@ -1,7 +1,19 @@
-from .slits import SlitH, SlitV
-from .XbpmBase import XbpmBase, XbpmCsaxsOp
-from .SpmBase import SpmBase
+# Standard ophyd classes
+from ophyd import EpicsMotor, EpicsSignal, EpicsSignalRO
+from ophyd.quadem import QuadEM
+from ophyd.sim import SynAxis, SynPeriodicSignal, SynSignal
+
+from .DelayGeneratorDG645 import DelayGeneratorDG645
+from .eiger9m_csaxs import Eiger9McSAXS
+
+# cSAXS
+from .epics_motor_ex import EpicsMotorEx
+from .falcon_csaxs import FalconcSAXS
+from .flomni_sample_storage import FlomniSampleStorage
 from .InsertionDevice import InsertionDevice
+from .mcs_csaxs import McsCsaxs
+from .pilatus_csaxs import PilatuscSAXS
+from .slits import SlitH, SlitV
 from .specMotors import (
     Bpm4i,
     EnergyKev,
@@ -15,19 +27,5 @@ from .specMotors import (
     PmDetectorRotation,
     PmMonoBender,
 )
-
-# Standard ophyd classes
-from ophyd import EpicsSignal, EpicsSignalRO, EpicsMotor
-from ophyd.sim import SynAxis, SynSignal, SynPeriodicSignal
-from ophyd.quadem import QuadEM
-
-# cSAXS
-from .epics_motor_ex import EpicsMotorEx
-from .mcs_csaxs import MCScSAXS
-from .psi_detector_base import PSIDetectorBase, CustomDetectorMixin
-from .eiger9m_csaxs import Eiger9McSAXS
-from .pilatus_csaxs import PilatuscSAXS
-from .falcon_csaxs import FalconcSAXS
-from .delay_generator_csaxs import DelayGeneratorcSAXS
-
-# from .psi_detector_base import PSIDetectorBase, CustomDetectorMixin
+from .SpmBase import SpmBase
+from .XbpmBase import XbpmBase, XbpmCsaxsOp

ophyd_devices/epics/devices/flomni_sample_storage.py

@@ -0,0 +1,82 @@
+import time
+
+from ophyd import Component as Cpt
+from ophyd import Device
+from ophyd import DynamicDeviceComponent as Dcpt
+from ophyd import EpicsSignal
+
+
+class FlomniSampleStorageError(Exception):
+    pass
+
+
+class FlomniSampleStorage(Device):
+    USER_ACCESS = [
+        "is_sample_slot_used",
+        "is_sample_in_gripper",
+        "set_sample_slot",
+        "unset_sample_slot",
+        "set_sample_in_gripper",
+        "unset_sample_in_gripper",
+    ]
+    SUB_VALUE = "value"
+    _default_sub = SUB_VALUE
+    sample_placed = {
+        f"sample{i}": (EpicsSignal, f"XOMNY-SAMPLE_DB_flomni{i}:GET", {}) for i in range(21)
+    }
+    sample_placed = Dcpt(sample_placed)
+
+    sample_names = {
+        f"sample{i}": (EpicsSignal, f"XOMNY-SAMPLE_DB_flomni{i}:GET.DESC", {"string": True})
+        for i in range(21)
+    }
+    sample_names = Dcpt(sample_names)
+
+    sample_in_gripper = Cpt(
+        EpicsSignal, name="sample_in_gripper", read_pv="XOMNY-SAMPLE_DB_flomni100:GET"
+    )
+    sample_in_gripper_name = Cpt(
+        EpicsSignal,
+        name="sample_in_gripper_name",
+        read_pv="XOMNY-SAMPLE_DB_flomni100:GET.DESC",
+        string=True,
+    )
+
+    def __init__(self, prefix="", *, name, **kwargs):
+        super().__init__(prefix, name=name, **kwargs)
+        self.sample_placed.sample1.subscribe(self._emit_value)
+
+    def _emit_value(self, **kwargs):
+        timestamp = kwargs.pop("timestamp", time.time())
+        self.wait_for_connection()
+        self._run_subs(sub_type=self.SUB_VALUE, timestamp=timestamp, obj=self)
+
+    def set_sample_slot(self, slot_nr: int, name: str) -> bool:
+        if slot_nr > 20:
+            raise FlomniSampleStorageError(f"Invalid slot number {slot_nr}.")
+
+        getattr(self.sample_placed, f"sample{slot_nr}").set(1)
+        getattr(self.sample_names, f"sample{slot_nr}").set(name)
+
+    def unset_sample_slot(self, slot_nr: int) -> bool:
+        if slot_nr > 20:
+            raise FlomniSampleStorageError(f"Invalid slot number {slot_nr}.")
+
+        getattr(self.sample_placed, f"sample{slot_nr}").set(0)
+        getattr(self.sample_names, f"sample{slot_nr}").set("-")
+
+    def set_sample_in_gripper(self, name: str) -> bool:
+        self.sample_in_gripper.set(1)
+        self.sample_in_gripper_name.set(name)
+
+    def unset_sample_in_gripper(self) -> bool:
+        self.sample_in_gripper.set(0)
+        self.sample_in_gripper_name.set("-")
+
+    def is_sample_slot_used(self, slot_nr: int) -> bool:
+        val = getattr(self.sample_placed, f"sample{slot_nr}").get()
+        return bool(val)
+
+    def is_sample_in_gripper(self) -> bool:
+        val = self.sample_in_gripper.get()
+        return bool(val)

ophyd_devices/galil/fgalil_ophyd.py

@@ -9,8 +9,6 @@ from ophyd import Component as Cpt
 from ophyd import Device, PositionerBase, Signal
 from ophyd.status import wait as status_wait
 from ophyd.utils import LimitError, ReadOnlyError
-from prettytable import PrettyTable
-
 from ophyd_devices.galil.galil_ophyd import (
     BECConfigError,
     GalilAxesReferenced,
@@ -21,15 +19,31 @@ from ophyd_devices.galil.galil_ophyd import (
     GalilMotorResolution,
     GalilReadbackSignal,
     GalilSetpointSignal,
+    GalilSignalRO,
     retry_once,
 )
 from ophyd_devices.utils.controller import Controller, threadlocked
 from ophyd_devices.utils.socket import SocketIO, SocketSignal, raise_if_disconnected
+from prettytable import PrettyTable
 
 logger = bec_logger.logger
 
 
 class FlomniGalilController(GalilController):
+    USER_ACCESS = [
+        "describe",
+        "show_running_threads",
+        "galil_show_all",
+        "socket_put_and_receive",
+        "socket_put_confirmed",
+        "drive_axis_to_limit",
+        "find_reference",
+        "get_motor_limit_switch",
+        "fosaz_light_curtain_is_triggered",
+        "is_motor_on",
+        "all_axes_referenced",
+    ]
+
     def is_axis_moving(self, axis_Id, axis_Id_numeric) -> bool:
         if axis_Id is None and axis_Id_numeric is not None:
             axis_Id = self.axis_Id_numeric_to_alpha(axis_Id_numeric)
@@ -41,13 +55,67 @@ class FlomniGalilController(GalilController):
         # TODO: check if all axes are referenced in all controllers
         return super().all_axes_referenced()
 
+    def fosaz_light_curtain_is_triggered(self) -> bool:
+        """
+        Check the light curtain status for fosaz
 
-class FlomniGalilReadbackSignal(GalilReadbackSignal):
-    pass
+        Returns:
+            bool: True if the light curtain is triggered
+        """
+
+        return int(float(self.socket_put_and_receive("MG @IN[14]").strip())) == 1
+
+
+class FlomniGalilReadbackSignal(GalilSignalRO):
+    @retry_once
+    @threadlocked
+    def _socket_get(self) -> float:
+        """Get command for the readback signal
+
+        Returns:
+            float: Readback value after adjusting for sign and motor resolution.
+        """
+
+        current_pos = float(self.controller.socket_put_and_receive(f"TD{self.parent.axis_Id}"))
+        current_pos *= self.parent.sign
+        step_mm = self.parent.motor_resolution.get()
+        return current_pos / step_mm
+
+    def read(self):
+        self._metadata["timestamp"] = time.time()
+        val = super().read()
+        return val
 
 
 class FlomniGalilSetpointSignal(GalilSetpointSignal):
-    pass
+    @retry_once
+    @threadlocked
+    def _socket_set(self, val: float) -> None:
+        """Set a new target value / setpoint value. Before submission, the target value is adjusted for the axis' sign.
+        Furthermore, it is ensured that all axes are referenced before a new setpoint is submitted.
+
+        Args:
+            val (float): Target value / setpoint value
+
+        Raises:
+            GalilError: Raised if not all axes are referenced.
+
+        """
+        target_val = val * self.parent.sign
+        self.setpoint = target_val
+        axes_referenced = self.controller.all_axes_referenced()
+        if axes_referenced:
+            while self.controller.is_thread_active(0):
+                time.sleep(0.1)
+
+            self.controller.socket_put_confirmed(f"naxis={self.parent.axis_Id_numeric}")
+            self.controller.socket_put_confirmed(f"ntarget={target_val:.3f}")
+            self.controller.socket_put_confirmed("movereq=1")
+            self.controller.socket_put_confirmed("XQ#NEWPAR")
+            while self.controller.is_thread_active(0):
+                time.sleep(0.005)
+        else:
+            raise GalilError("Not all axes are referenced.")
 
 
 class FlomniGalilMotorResolution(GalilMotorResolution):
@@ -65,7 +133,7 @@ class FlomniGalilAxesReferenced(GalilAxesReferenced):
 class FlomniGalilMotor(Device, PositionerBase):
     USER_ACCESS = ["controller"]
     readback = Cpt(
-        GalilReadbackSignal,
+        FlomniGalilReadbackSignal,
         signal_name="readback",
         kind="hinted",
     )
@@ -115,6 +183,7 @@ class FlomniGalilMotor(Device, PositionerBase):
                 "device_mapping has been specified but the device_manager cannot be accessed."
             )
         self.rt = self.device_mapping.get("rt")
+        self.pid_x_correction = 0
 
         super().__init__(
             prefix,

ophyd_devices/galil/fupr_ophyd.py

@@ -63,6 +63,18 @@ class FuprGalilReadbackSignal(GalilReadbackSignal):
         step_mm = self.parent.motor_resolution.get()
         return current_pos / step_mm
 
+    def read(self):
+        self._metadata["timestamp"] = time.time()
+        val = super().read()
+        if self.parent.axis_Id_numeric == 0:
+            try:
+                rt = self.parent.device_manager.devices[self.parent.rt]
+                if rt.enabled:
+                    rt.obj.controller.set_rotation_angle(val[self.parent.name]["value"])
+            except KeyError:
+                logger.warning("Failed to set RT value during readback.")
+        return val
+
 
 class FuprGalilSetpointSignal(GalilSetpointSignal):
     @retry_once

ophyd_devices/galil/galil_ophyd.py

@@ -52,6 +52,11 @@ class GalilController(Controller):
         "socket_put_and_receive",
         "socket_put_confirmed",
         "lgalil_is_air_off_and_orchestra_enabled",
+        "drive_axis_to_limit",
+        "find_reference",
+        "get_motor_limit_switch",
+        "is_motor_on",
+        "all_axes_referenced",
     ]
 
     @threadlocked
@@ -143,10 +148,11 @@ class GalilController(Controller):
         self.socket_put_confirmed(f"naxis={axis_Id_numeric}")
         self.socket_put_confirmed(f"ndir={direction_flag}")
         self.socket_put_confirmed("XQ#NEWPAR")
+        time.sleep(0.005)
         self.socket_put_confirmed("XQ#FES")
-        time.sleep(0.1)
+        time.sleep(0.01)
         while self.is_axis_moving(None, axis_Id_numeric):
-            time.sleep(0.1)
+            time.sleep(0.01)
 
         axis_Id = self.axis_Id_numeric_to_alpha(axis_Id_numeric)
         # check if we actually hit the limit

ophyd_devices/rt_lamni/__init__.py

@@ -1 +1,2 @@
-from .rt_lamni_ophyd import RtLamniMotor, RtLamniController
+from .rt_flomni_ophyd import RtFlomniController, RtFlomniMotor
+from .rt_lamni_ophyd import RtLamniController, RtLamniMotor

ophyd_devices/rt_lamni/rt_flomni_ophyd.py

@@ -0,0 +1,749 @@
+import functools
+import threading
+import time
+from typing import List
+
+import numpy as np
+from bec_lib import MessageEndpoints, bec_logger, messages
+from ophyd import Component as Cpt
+from ophyd import Device, PositionerBase, Signal
+from ophyd.status import wait as status_wait
+from ophyd.utils import LimitError, ReadOnlyError
+from ophyd_devices.rt_lamni.rt_ophyd import (
+    BECConfigError,
+    RtCommunicationError,
+    RtController,
+    RtError,
+    RtReadbackSignal,
+    RtSetpointSignal,
+    RtSignalRO,
+    retry_once,
+)
+from ophyd_devices.utils.controller import Controller, threadlocked
+from ophyd_devices.utils.socket import SocketIO, SocketSignal, raise_if_disconnected
+from prettytable import PrettyTable
+
+logger = bec_logger.logger
+
+
+class RtFlomniController(RtController):
+    USER_ACCESS = [
+        "socket_put_and_receive",
+        "set_rotation_angle",
+        "feedback_disable",
+        "feedback_enable_without_reset",
+        "feedback_enable_with_reset",
+        "add_pos_to_scan",
+        "clear_trajectory_generator",
+        "show_cyclic_error_compensation",
+        "laser_tracker_on",
+        "laser_tracker_off",
+        "laser_tracker_show_all",
+    ]
+
+    def __init__(
+        self,
+        *,
+        name=None,
+        socket_cls=None,
+        socket_host=None,
+        socket_port=None,
+        attr_name="",
+        parent=None,
+        labels=None,
+        kind=None,
+    ):
+        super().__init__(
+            name=name,
+            socket_cls=socket_cls,
+            socket_host=socket_host,
+            socket_port=socket_port,
+            attr_name=attr_name,
+            parent=parent,
+            labels=labels,
+            kind=kind,
+        )
+        self.tracker_info = {}
+        self._min_scan_buffer_reached = False
+        self.rt_pid_voltage = None
+
+    def add_pos_to_scan(self, positions) -> None:
+        def send_positions(parent, positions):
+            parent._min_scan_buffer_reached = False
+            start_time = time.time()
+            for pos_index, pos in enumerate(positions):
+                parent.socket_put_and_receive(f"s{pos[0]},{pos[1]},{pos[2]}")
+                if pos_index > 100:
+                    parent._min_scan_buffer_reached = True
+            parent._min_scan_buffer_reached = True
+            logger.info(
+                f"Sending {len(positions)} positions took {time.time()-start_time} seconds."
+            )
+
+        threading.Thread(target=send_positions, args=(self, positions), daemon=True).start()
+
+    def move_to_zero(self):
+        self.socket_put("pa0,0")
+        self.get_axis_by_name("rtx").user_setpoint.setpoint = 0
+        self.socket_put("pa1,0")
+        self.get_axis_by_name("rty").user_setpoint.setpoint = 0
+        self.socket_put("pa2,0")
+        self.get_axis_by_name("rtz").user_setpoint.setpoint = 0
+        time.sleep(0.05)
+
+    def feedback_is_running(self) -> bool:
+        status = int(float(self.socket_put_and_receive("l2").strip()))
+        if status == 1:
+            return False
+        return True
+
+    def feedback_enable_with_reset(self):
+        self.socket_put("l0")  # disable feedback
+
+        self.move_to_zero()
+
+        if not self.slew_rate_limiters_on_target() or np.abs(self.pid_y()) > 0.1:
+            logger.info("Please wait, slew rate limiters not on target.")
+        while not self.slew_rate_limiters_on_target() or np.abs(self.pid_y()) > 0.1:
+            time.sleep(0.05)
+
+        self.get_device_manager().devices.rty.update_user_parameter({"tomo_additional_offsety": 0})
+        self.clear_trajectory_generator()
+
+        self.laser_tracker_on()
+
+        # move to 0. FUPR will set the rotation angle during readout
+        self.get_device_manager().devices.fsamroy.obj.move(0, wait=True)
+
+        fsamx = self.get_device_manager().devices.fsamx
+
+        fsamx.obj.pid_x_correction = 0
+        fsamx.obj.controller.socket_put_confirmed("axspeed[4]=0.1*stppermm[4]")
+        fsamx_in = fsamx.user_parameter.get("in")
+        if not np.isclose(fsamx.obj.readback.get(), fsamx_in, atol=0.3):
+            raise RtError(
+                "Something is wrong. fsamx is very far from the samx_in position. Don't dare correct automatically."
+            )
+
+        if not np.isclose(fsamx.obj.readback.get(), fsamx_in, atol=0.01):
+            fsamx.enabled_set = True
+            fsamx.obj.move(fsamx_in, wait=True)
+            fsamx.enabled_set = False
+            time.sleep(1)
+
+        self.socket_put("l1")
+        time.sleep(0.4)
+
+        if not self.feedback_is_running():
+            raise RtError("Feedback is not running; likely an error in the interferometer.")
+
+        time.sleep(1.5)
+        self.show_cyclic_error_compensation()
+
+        self.rt_pid_voltage = self.get_pid_x()
+        rtx = self.get_device_manager().devices.rtx
+        rtx.update_user_parameter({"rt_pid_voltage": self.rt_pid_voltage})
+
+        self.set_device_enabled("fsamx", False)
+        self.set_device_enabled("fsamy", False)
+        self.set_device_enabled("foptx", False)
+        self.set_device_enabled("fopty", False)
+
+    def move_samx_to_scan_region(self, fovx: float, cenx: float):
+        if self.rt_pid_voltage is None:
+            rtx = self.get_device_manager().devices.rtx
+            self.rt_pid_voltage = rtx.user_parameter.get("rt_pid_voltage")
+            if self.rt_pid_voltage is None:
+                raise RtError(
+                    "rt_pid_voltage not set in rtx user parameters. Please run feedback_enable_with_reset first."
+                )
+            logger.info(f"Using PID voltage from rtx user parameter: {self.rt_pid_voltage}")
+        expected_voltage = self.rt_pid_voltage + fovx / 2 * 7 / 100
+        logger.info(f"Expected PID voltage: {expected_voltage}")
+        logger.info(f"Current PID voltage: {self.get_pid_x()}")
+
+        wait_on_exit = False
+        while True:
+            if np.abs(self.get_pid_x() - expected_voltage) < 1:
+                break
+            wait_on_exit = True
+            self.socket_put("v0")
+            fsamx = self.get_device_manager().devices.fsamx
+            fsamx.enabled_set = True
+            fsamx.obj.controller.socket_put_confirmed("axspeed[4]=0.1*stppermm[4]")
+            fsamx.obj.pid_x_correction -= (self.get_pid_x() - expected_voltage) * 0.01
+            logger.info(f"Correcting fsamx by {fsamx.obj.pid_x_correction}")
+            fsamx_in = fsamx.user_parameter.get("in")
+            fsamx.obj.move(fsamx_in + cenx / 1000 + fsamx.obj.pid_x_correction, wait=True)
+            fsamx.enabled_set = False
+            time.sleep(0.1)
+            self.laser_tracker_on()
+            time.sleep(0.01)
+
+        if wait_on_exit:
+            time.sleep(1)
+
+        self.socket_put("v1")
+
+    @threadlocked
+    def clear_trajectory_generator(self):
+        self.socket_put("sc")
+        logger.info("flomni scan stopped and deleted, moving to start position")
+
+    def feedback_enable_without_reset(self):
+        self.laser_tracker_on()
+        self.socket_put("l3")
+        time.sleep(0.01)
+
+        if not self.feedback_is_running():
+            raise RtError("Feedback is not running; likely an error in the interferometer.")
+
+        self.set_device_enabled("fsamx", False)
+        self.set_device_enabled("fsamy", False)
+        self.set_device_enabled("foptx", False)
+        self.set_device_enabled("fopty", False)
+
+    def feedback_disable(self):
+        self.clear_trajectory_generator()
+        self.move_to_zero()
+        self.socket_put("l0")
+
+        self.set_device_enabled("fsamx", True)
+        self.set_device_enabled("fsamy", True)
+        self.set_device_enabled("foptx", True)
+        self.set_device_enabled("fopty", True)
+
+        fsamx = self.get_device_manager().devices.fsamx
+        fsamx.obj.controller.socket_put_confirmed("axspeed[4]=025*stppermm[4]")
+
+    def get_pid_x(self) -> float:
+        voltage = float(self.socket_put_and_receive("g").strip())
+        return voltage
+
+    def show_cyclic_error_compensation(self):
+        cec0 = int(float(self.socket_put_and_receive("w0").strip()))
+        cec1 = int(float(self.socket_put_and_receive("w0").strip()))
+
+        if cec0 == 32:
+            logger.info("Cyclic Error Compensation: y-axis is initialized")
+        else:
+            logger.info("Cyclic Error Compensation: y-axis is NOT initialized")
+        if cec1 == 32:
+            logger.info("Cyclic Error Compensation: x-axis is initialized")
+        else:
+            logger.info("Cyclic Error Compensation: y-axis is NOT initialized")
+
+    def set_rotation_angle(self, val: float) -> None:
+        self.socket_put(f"a{(-val)/180*np.pi}")
+
+    def laser_tracker_on(self):
+        self.laser_update_tracker_info()
+
+        if not self.tracker_info["enabled_z"] or not self.tracker_info["enabled_y"]:
+            logger.info("Enabling the laser tracker. Please wait...")
+
+            tracker_intensity = self.tracker_info["tracker_intensity"]
+            if (
+                tracker_intensity < self.tracker_info["threshold_intensity_y"]
+                or tracker_intensity < self.tracker_info["threshold_intensity_z"]
+            ):
+                logger.info(self.tracker_info)
+                raise RtError("The tracker cannot be enabled because the beam intensity it low.")
+
+            self.move_to_zero()
+            self.socket_put("T1")
+            time.sleep(0.5)
+
+            self.get_device_manager().devices.ftrackz.obj.controller.socket_put_confirmed(
+                "trackyct=0"
+            )
+            self.get_device_manager().devices.ftrackz.obj.controller.socket_put_confirmed(
+                "trackzct=0"
+            )
+
+        self.laser_tracker_wait_on_target()
+        logger.info("Laser tracker running!")
+
+    def laser_tracker_off(self):
+        self.socket_put("T0")
+
+    def laser_tracker_show_all(self):
+        self.laser_update_tracker_info()
+        t = PrettyTable()
+        t.title = f"Laser Tracker Info"
+        t.field_names = ["Name", "Value"]
+        for key, val in self.tracker_info.items():
+            t.add_row([key, val])
+        print(t)
+
+    def laser_update_tracker_info(self):
+        ret = self.socket_put_and_receive("Ts")
+
+        # remove trailing \n
+        ret = ret.split("\n")[0]
+
+        tracker_values = [float(val) for val in ret.split(",")]
+        self.tracker_info = {
+            "tracker_intensity": tracker_values[2],
+            "threshold_intensity_y": tracker_values[8],
+            "enabled_y": bool(tracker_values[10]),
+            "beampos_y": tracker_values[5],
+            "target_y": tracker_values[6],
+            "piezo_voltage_y": tracker_values[9],
+            "threshold_intensity_z": tracker_values[3],
+            "enabled_z": bool(tracker_values[10]),
+            "beampos_z": tracker_values[0],
+            "target_z": tracker_values[1],
+            "piezo_voltage_z": tracker_values[4],
+        }
+
+    def laser_tracker_galil_enable(self):
+        self.get_device_manager().devices.ftrackz.obj.controller.socket_put_confirmed("tracken=1")
+        self.get_device_manager().devices.ftrackz.obj.controller.socket_put_confirmed("trackyct=0")
+        self.get_device_manager().devices.ftrackz.obj.controller.socket_put_confirmed("trackzct=0")
+        self.get_device_manager().devices.ftrackz.obj.controller.socket_put_confirmed("XQ#Tracker")
+
+    def laser_tracker_on_target(self) -> bool:
+        self.laser_update_tracker_info()
+        if np.isclose(
+            self.tracker_info["beampos_y"], self.tracker_info["target_y"], atol=0.02
+        ) and np.isclose(self.tracker_info["beampos_z"], self.tracker_info["target_z"], atol=0.02):
+            return True
+        return False
+
+    def laser_tracker_wait_on_target(self):
+        max_repeat = 25
+        count = 0
+        while not self.laser_tracker_on_target():
+            self.laser_tracker_galil_enable()
+            logger.info("Waiting for laser tracker to reach target.")
+            time.sleep(0.5)
+            count += 1
+            if count > max_repeat:
+                raise RtError("Failed to reach laser target position.")
+
+    def slew_rate_limiters_on_target(self) -> bool:
+        ret = int(float(self.socket_put_and_receive("y").strip()))
+        if ret == 3:
+            return True
+        return False
+
+    def pid_y(self) -> float:
+        ret = float(self.socket_put_and_receive("G").strip())
+        return ret
+
+    def read_ssi_interferometer(self, axis_number):
+        val = float(self.socket_put_and_receive(f"j{axis_number}").strip())
+        return val
+
+    def show_signal_strength_interferometer(self):
+        t = PrettyTable()
+        t.title = f"Interferometer signal strength"
+        t.field_names = ["Axis", "Value"]
+        for i in range(3):
+            t.add_row([i, self.read_ssi_interferometer(i)])
+        print(t)
+
+    def _get_signals_from_table(self, return_table) -> dict:
+        self.average_stdeviations_x_st_fzp += float(return_table[4])
+        self.average_stdeviations_y_st_fzp += float(return_table[7])
+        signals = {
+            "target_x": {"value": float(return_table[2])},
+            "average_x_st_fzp": {"value": float(return_table[3])},
+            "stdev_x_st_fzp": {"value": float(return_table[4])},
+            "target_y": {"value": float(return_table[5])},
+            "average_y_st_fzp": {"value": float(return_table[6])},
+            "stdev_y_st_fzp": {"value": float(return_table[7])},
+            "average_rotz": {"value": float(return_table[8])},
+            "stdev_rotz": {"value": float(return_table[9])},
+            "average_stdeviations_x_st_fzp": {
+                "value": self.average_stdeviations_x_st_fzp / (int(return_table[0]) + 1)
+            },
+            "average_stdeviations_y_st_fzp": {
+                "value": self.average_stdeviations_y_st_fzp / (int(return_table[0]) + 1)
+            },
+        }
+        return signals
+
+    @threadlocked
+    def start_scan(self):
+        if not self.feedback_is_running():
+            logger.error(
+                "Cannot start scan because feedback loop is not running or there is an interferometer error."
+            )
+            raise RtError(
+                "Cannot start scan because feedback loop is not running or there is an interferometer error."
+            )
+            # here exception
+        (mode, number_of_positions_planned, current_position_in_scan) = self.get_scan_status()
+
+        if number_of_positions_planned == 0:
+            logger.error("Cannot start scan because no target positions are planned.")
+            raise RtError("Cannot start scan because no target positions are planned.")
+            # hier exception
+        # start a point-by-point scan (for cont scan in flomni it would be "sa")
+        self.socket_put_and_receive("sd")
+
+    @retry_once
+    @threadlocked
+    def get_scan_status(self):
+        return_table = (self.socket_put_and_receive("sr")).split(",")
+        if len(return_table) != 3:
+            raise RtCommunicationError(
+                f"Expected to receive 3 return values. Instead received {return_table}"
+            )
+        mode = int(float(return_table[0]))
+        # mode 0: direct positioning
+        # mode 1: running internal timer (not tested/used anymore)
+        # mode 2: rt point scan running
+        # mode 3: rt point scan starting
+        # mode 5/6: rt continuous scanning (not available in LamNI)
+        number_of_positions_planned = int(float(return_table[1]))
+        current_position_in_scan = int(float(return_table[2]))
+        return (mode, number_of_positions_planned, current_position_in_scan)
+
+    def get_device_manager(self):
+        for axis in self._axis:
+            if hasattr(axis, "device_manager") and axis.device_manager:
+                return axis.device_manager
+        raise BECConfigError("Could not access the device_manager")
+
+    def read_positions_from_sampler(self):
+        # this was for reading after the scan completed
+        number_of_samples_to_read = 1  # self.get_scan_status()[1]  #number of valid samples, will be updated upon first data read
+
+        read_counter = 0
+
+        self.average_stdeviations_x_st_fzp = 0
+        self.average_stdeviations_y_st_fzp = 0
+        self.average_lamni_angle = 0
+
+        mode, number_of_positions_planned, current_position_in_scan = self.get_scan_status()
+
+        # if not (mode==2 or mode==3):
+        #    error
+        self.get_device_manager().producer.set_and_publish(
+            MessageEndpoints.device_status("rt_scan"),
+            messages.DeviceStatusMessage(
+                device="rt_scan", status=1, metadata=self.readout_metadata
+            ).dumps(),
+        )
+        # while scan is running
+        while mode > 0:
+            # logger.info(f"Current scan position {current_position_in_scan} out of {number_of_positions_planned}")
+            mode, number_of_positions_planned, current_position_in_scan = self.get_scan_status()
+            time.sleep(0.01)
+            if current_position_in_scan > 5:
+                while current_position_in_scan > read_counter + 1:
+                    return_table = (self.socket_put_and_receive(f"r{read_counter}")).split(",")
+                    # logger.info(f"{return_table}")
+                    logger.info(f"Read {read_counter} out of {number_of_positions_planned}")
+
+                    read_counter = read_counter + 1
+
+                    signals = self._get_signals_from_table(return_table)
+
+                    self.publish_device_data(signals=signals, pointID=int(return_table[0]))
+
+        time.sleep(0.05)
+
+        # read the last samples even though scan is finished already
+        while number_of_positions_planned > read_counter:
+            return_table = (self.socket_put_and_receive(f"r{read_counter}")).split(",")
+            logger.info(f"Read {read_counter} out of {number_of_positions_planned}")
+            # logger.info(f"{return_table}")
+            read_counter = read_counter + 1
+
+            signals = self._get_signals_from_table(return_table)
+            self.publish_device_data(signals=signals, pointID=int(return_table[0]))
+
+        self.get_device_manager().producer.set_and_publish(
+            MessageEndpoints.device_status("rt_scan"),
+            messages.DeviceStatusMessage(
+                device="rt_scan", status=0, metadata=self.readout_metadata
+            ).dumps(),
+        )
+
+        logger.info(
+            f"Flomni statistics: Average of all standard deviations: x {self.average_stdeviations_x_st_fzp/number_of_samples_to_read}, y {self.average_stdeviations_y_st_fzp/number_of_samples_to_read}."
+        )
+
+    def publish_device_data(self, signals, pointID):
+        self.get_device_manager().producer.send(
+            MessageEndpoints.device_read("rt_flomni"),
+            messages.DeviceMessage(
+                signals=signals,
+                metadata={"pointID": pointID, **self.readout_metadata},
+            ).dumps(),
+        )
+
+    def start_readout(self):
+        readout = threading.Thread(target=self.read_positions_from_sampler)
+        readout.start()
+
+    def kickoff(self, metadata):
+        self.readout_metadata = metadata
+        while not self._min_scan_buffer_reached:
+            time.sleep(0.001)
+        self.start_scan()
+        time.sleep(0.1)
+        self.start_readout()
+
+
+class RtFlomniReadbackSignal(RtReadbackSignal):
+    @retry_once
+    @threadlocked
+    def _socket_get(self) -> float:
+        """Get command for the readback signal
+
+        Returns:
+        float: Readback value after adjusting for sign and motor resolution.
+        """
+        time.sleep(0.1)
+        return_table = (self.controller.socket_put_and_receive(f"pr")).split(",")
+
+        current_pos = float(return_table[self.parent.axis_Id_numeric])
+
+        current_pos *= self.parent.sign
+        self.parent.user_setpoint.setpoint = current_pos
+        return current_pos
+
+
+class RtFlomniSetpointSignal(RtSetpointSignal):
+    setpoint = 0
+
+    @retry_once
+    @threadlocked
+    def _socket_set(self, val: float) -> None:
+        """Set a new target value / setpoint value. Before submission, the target value is adjusted for the axis' sign.
+        Furthermore, it is ensured that all axes are referenced before a new setpoint is submitted.
+
+        Args:
+            val (float): Target value / setpoint value
+
+        Raises:
+            RtError: Raised if interferometer feedback is disabled.
+
+        """
+        if not self.parent.controller.feedback_is_running():
+            raise RtError(
+                "The interferometer feedback is not running. Either it is turned off or and interferometer error occured."
+            )
+        self.set_with_feedback_disabled(val)
+
+    def set_with_feedback_disabled(self, val):
+        target_val = val * self.parent.sign
+        self.setpoint = target_val
+        self.controller.socket_put(f"pa{self.parent.axis_Id_numeric},{target_val:.4f}")
+
+
+class RtFlomniFeedbackRunning(RtSignalRO):
+    @threadlocked
+    def _socket_get(self):
+        return int(self.parent.controller.feedback_is_running())
+
+
+class RtFlomniMotor(Device, PositionerBase):
+    USER_ACCESS = ["controller"]
+    readback = Cpt(
+        RtFlomniReadbackSignal,
+        signal_name="readback",
+        kind="hinted",
+    )
+    user_setpoint = Cpt(RtFlomniSetpointSignal, signal_name="setpoint")
+
+    high_limit_travel = Cpt(Signal, value=0, kind="omitted")
+    low_limit_travel = Cpt(Signal, value=0, kind="omitted")
+
+    SUB_READBACK = "readback"
+    SUB_CONNECTION_CHANGE = "connection_change"
+    _default_sub = SUB_READBACK
+
+    def __init__(
+        self,
+        axis_Id,
+        prefix="",
+        *,
+        name,
+        kind=None,
+        read_attrs=None,
+        configuration_attrs=None,
+        parent=None,
+        host="mpc2844.psi.ch",
+        port=2222,
+        sign=1,
+        socket_cls=SocketIO,
+        device_manager=None,
+        limits=None,
+        **kwargs,
+    ):
+        self.axis_Id = axis_Id
+        self.sign = sign
+        self.controller = RtFlomniController(
+            socket_cls=socket_cls, socket_host=host, socket_port=port
+        )
+        self.controller.set_axis(axis=self, axis_nr=self.axis_Id_numeric)
+        self.device_manager = device_manager
+        self.tolerance = kwargs.pop("tolerance", 0.5)
+
+        super().__init__(
+            prefix,
+            name=name,
+            kind=kind,
+            read_attrs=read_attrs,
+            configuration_attrs=configuration_attrs,
+            parent=parent,
+            **kwargs,
+        )
+        self.readback.name = self.name
+        self.controller.subscribe(
+            self._update_connection_state, event_type=self.SUB_CONNECTION_CHANGE
+        )
+        self._update_connection_state()
+
+        # self.readback.subscribe(self._forward_readback, event_type=self.readback.SUB_VALUE)
+        if limits is not None:
+            assert len(limits) == 2
+            self.low_limit_travel.put(limits[0])
+            self.high_limit_travel.put(limits[1])
+
+    @property
+    def limits(self):
+        return (self.low_limit_travel.get(), self.high_limit_travel.get())
+
+    @property
+    def low_limit(self):
+        return self.limits[0]
+
+    @property
+    def high_limit(self):
+        return self.limits[1]
+
+    def check_value(self, pos):
+        """Check that the position is within the soft limits"""
+        low_limit, high_limit = self.limits
+
+        if low_limit < high_limit and not (low_limit <= pos <= high_limit):
+            raise LimitError(f"position={pos} not within limits {self.limits}")
+
+    def _update_connection_state(self, **kwargs):
+        for walk in self.walk_signals():
+            walk.item._metadata["connected"] = self.controller.connected
+
+    def _forward_readback(self, **kwargs):
+        kwargs.pop("sub_type")
+        self._run_subs(sub_type="readback", **kwargs)
+
+    @raise_if_disconnected
+    def move(self, position, wait=True, **kwargs):
+        """Move to a specified position, optionally waiting for motion to
+        complete.
+
+        Parameters
+        ----------
+        position
+            Position to move to
+        moved_cb : callable
+            Call this callback when movement has finished. This callback must
+            accept one keyword argument: 'obj' which will be set to this
+            positioner instance.
+        timeout : float, optional
+            Maximum time to wait for the motion. If None, the default timeout
+            for this positioner is used.
+
+        Returns
+        -------
+        status : MoveStatus
+
+        Raises
+        ------
+        TimeoutError
+            When motion takes longer than `timeout`
+        ValueError
+            On invalid positions
+        RuntimeError
+            If motion fails other than timing out
+        """
+        self._started_moving = False
+        timeout = kwargs.pop("timeout", 100)
+        status = super().move(position, timeout=timeout, **kwargs)
+        self.user_setpoint.put(position, wait=False)
+
+        def move_and_finish():
+            while not self.controller.slew_rate_limiters_on_target():
+                print("motor is moving")
+                val = self.readback.read()
+                self._run_subs(
+                    sub_type=self.SUB_READBACK,
+                    value=val,
+                    timestamp=time.time(),
+                )
+                time.sleep(0.01)
+            print("Move finished")
+            self._done_moving()
+
+        threading.Thread(target=move_and_finish, daemon=True).start()
+        try:
+            if wait:
+                status_wait(status)
+        except KeyboardInterrupt:
+            self.stop()
+            raise
+
+        return status
+
+    @property
+    def axis_Id(self):
+        return self._axis_Id_alpha
+
+    @axis_Id.setter
+    def axis_Id(self, val):
+        if isinstance(val, str):
+            if len(val) != 1:
+                raise ValueError(f"Only single-character axis_Ids are supported.")
+            self._axis_Id_alpha = val
+            self._axis_Id_numeric = ord(val.lower()) - 97
+        else:
+            raise TypeError(f"Expected value of type str but received {type(val)}")
+
+    @property
+    def axis_Id_numeric(self):
+        return self._axis_Id_numeric
+
+    @axis_Id_numeric.setter
+    def axis_Id_numeric(self, val):
+        if isinstance(val, int):
+            if val > 26:
+                raise ValueError(f"Numeric value exceeds supported range.")
+            self._axis_Id_alpha = val
+            self._axis_Id_numeric = (chr(val + 97)).capitalize()
+        else:
+            raise TypeError(f"Expected value of type int but received {type(val)}")
+
+    def kickoff(self, metadata, **kwargs) -> None:
+        self.controller.kickoff(metadata)
+
+    @property
+    def egu(self):
+        """The engineering units (EGU) for positions"""
+        return "um"
+
+    # how is this used later?
+
+    def stage(self) -> List[object]:
+        return super().stage()
+
+    def unstage(self) -> List[object]:
+        return super().unstage()
+
+    def stop(self, *, success=False):
+        self.controller.stop_all_axes()
+        return super().stop(success=success)
+
+
+if __name__ == "__main__":
+    rtcontroller = RtFlomniController(
+        socket_cls=SocketIO, socket_host="mpc2844.psi.ch", socket_port=2222
+    )
+    rtcontroller.on()
+    rtcontroller.laser_tracker_on()

ophyd_devices/rt_lamni/rt_ophyd.py

@@ -0,0 +1,831 @@
+import functools
+import threading
+import time
+from typing import List
+
+import numpy as np
+from bec_lib import MessageEndpoints, bec_logger, messages
+from ophyd import Component as Cpt
+from ophyd import Device, PositionerBase, Signal
+from ophyd.status import wait as status_wait
+from ophyd.utils import LimitError, ReadOnlyError
+
+from ophyd_devices.utils.controller import Controller, threadlocked
+from ophyd_devices.utils.socket import SocketIO, SocketSignal, raise_if_disconnected
+
+logger = bec_logger.logger
+
+
+class RtCommunicationError(Exception):
+    pass
+
+
+class RtError(Exception):
+    pass
+
+
+class BECConfigError(Exception):
+    pass
+
+
+def retry_once(fcn):
+    """Decorator to rerun a function in case a CommunicationError was raised. This may happen if the buffer was not empty."""
+
+    @functools.wraps(fcn)
+    def wrapper(self, *args, **kwargs):
+        try:
+            val = fcn(self, *args, **kwargs)
+        except (RtCommunicationError, RtError):
+            val = fcn(self, *args, **kwargs)
+        return val
+
+    return wrapper
+
+
+class RtController(Controller):
+    _axes_per_controller = 3
+    USER_ACCESS = [
+        "socket_put_and_receive",
+        "set_rotation_angle",
+        "feedback_disable",
+        "feedback_enable_without_reset",
+        "feedback_disable_and_even_reset_lamni_angle_interferometer",
+        "feedback_enable_with_reset",
+        "add_pos_to_scan",
+        "clear_trajectory_generator",
+        "_set_axis_velocity",
+        "_set_axis_velocity_maximum_speed",
+        "_position_sampling_single_read",
+        "_position_sampling_single_reset_and_start_sampling",
+    ]
+
+    def on(self, controller_num=0) -> None:
+        """Open a new socket connection to the controller"""
+        # if not self.connected:
+        #     try:
+        #         self.sock.open()
+        #         # discuss - after disconnect takes a while for the server to be ready again
+        #         max_retries = 10
+        #         tries = 0
+        #         while not self.connected:
+        #             try:
+        #                 welcome_message = self.sock.receive()
+        #                 self.connected = True
+        #             except ConnectionResetError as conn_reset:
+        #                 if tries > max_retries:
+        #                     raise conn_reset
+        #                 tries += 1
+        #                 time.sleep(2)
+        #     except ConnectionRefusedError as conn_error:
+        #         logger.error("Failed to open a connection to RTLamNI.")
+        #         raise RtCommunicationError from conn_error
+
+        # else:
+        #     logger.info("The connection has already been established.")
+        #     # warnings.warn(f"The connection has already been established.", stacklevel=2)
+        super().on()
+        # self._update_flyer_device_info()
+
+    def set_axis(self, axis: Device, axis_nr: int) -> None:
+        """Assign an axis to a device instance.
+
+        Args:
+            axis (Device): Device instance (e.g. GalilMotor)
+            axis_nr (int): Controller axis number
+
+        """
+        self._axis[axis_nr] = axis
+
+    @threadlocked
+    def socket_put(self, val: str) -> None:
+        self.sock.put(f"{val}\n".encode())
+
+    @threadlocked
+    def socket_get(self) -> str:
+        return self.sock.receive().decode()
+
+    @retry_once
+    @threadlocked
+    def socket_put_and_receive(self, val: str, remove_trailing_chars=True) -> str:
+        self.socket_put(val)
+        if remove_trailing_chars:
+            return self._remove_trailing_characters(self.sock.receive().decode())
+        return self.socket_get()
+
+    def is_axis_moving(self, axis_Id) -> bool:
+        # this checks that axis is on target
+        axis_is_on_target = bool(float(self.socket_put_and_receive(f"o")))
+        return not axis_is_on_target
+
+    #    def is_thread_active(self, thread_id: int) -> bool:
+    #        val = float(self.socket_put_and_receive(f"MG_XQ{thread_id}"))
+    #        if val == -1:
+    #            return False
+    #        return True
+
+    def _remove_trailing_characters(self, var) -> str:
+        if len(var) > 1:
+            return var.split("\r\n")[0]
+        return var
+
+    @threadlocked
+    def set_rotation_angle(self, val: float):
+        self.socket_put(f"a{(val-300+30.538)/180*np.pi}")
+
+    @threadlocked
+    def stop_all_axes(self):
+        self.socket_put("sc")
+
+    @threadlocked
+    def feedback_disable(self):
+        self.socket_put("J0")
+        logger.info("LamNI Feedback disabled.")
+        self.set_device_enabled("lsamx", True)
+        self.set_device_enabled("lsamy", True)
+        self.set_device_enabled("loptx", True)
+        self.set_device_enabled("lopty", True)
+        self.set_device_enabled("loptz", True)
+
+    @threadlocked
+    def _set_axis_velocity(self, um_per_s):
+        self.socket_put(f"V{um_per_s}")
+
+    @threadlocked
+    def _set_axis_velocity_maximum_speed(self):
+        self.socket_put(f"V0")
+
+    # for developement of soft continuous scanning
+    @threadlocked
+    def _position_sampling_single_reset_and_start_sampling(self):
+        self.socket_put(f"Ss")
+
+    @threadlocked
+    def _position_sampling_single_read(self):
+        (number_of_samples, sum0, sum0_2, sum1, sum1_2, sum2, sum2_2) = self.socket_put_and_receive(
+            f"Sr"
+        ).split(",")
+        avg_x = float(sum1) / int(number_of_samples)
+        avg_y = float(sum0) / int(number_of_samples)
+        stdev_x = np.sqrt(
+            float(sum1_2) / int(number_of_samples)
+            - np.power(float(sum1) / int(number_of_samples), 2)
+        )
+        stdev_y = np.sqrt(
+            float(sum0_2) / int(number_of_samples)
+            - np.power(float(sum0) / int(number_of_samples), 2)
+        )
+        return (avg_x, avg_y, stdev_x, stdev_y)
+
+    @threadlocked
+    def feedback_enable_without_reset(self):
+        # read current interferometer position
+        return_table = (self.socket_put_and_receive(f"J4")).split(",")
+        x_curr = float(return_table[2])
+        y_curr = float(return_table[1])
+        # set these as closed loop target position
+        self.socket_put(f"pa0,{x_curr:.4f}")
+        self.socket_put(f"pa1,{y_curr:.4f}")
+        self.get_device_manager().devices.rtx.obj.user_setpoint.set_with_feedback_disabled(x_curr)
+        self.get_device_manager().devices.rty.obj.user_setpoint.set_with_feedback_disabled(y_curr)
+        self.socket_put("J5")
+        logger.info("LamNI Feedback enabled (without reset).")
+        self.set_device_enabled("lsamx", False)
+        self.set_device_enabled("lsamy", False)
+        self.set_device_enabled("loptx", False)
+        self.set_device_enabled("lopty", False)
+        self.set_device_enabled("loptz", False)
+
+    @threadlocked
+    def feedback_disable_and_even_reset_lamni_angle_interferometer(self):
+        self.socket_put("J6")
+        logger.info("LamNI Feedback disabled including the angular interferometer.")
+        self.set_device_enabled("lsamx", True)
+        self.set_device_enabled("lsamy", True)
+        self.set_device_enabled("loptx", True)
+        self.set_device_enabled("lopty", True)
+        self.set_device_enabled("loptz", True)
+
+    def get_device_manager(self):
+        for axis in self._axis:
+            if hasattr(axis, "device_manager") and axis.device_manager:
+                return axis.device_manager
+        raise BECConfigError("Could not access the device_manager")
+
+    def get_axis_by_name(self, name):
+        for axis in self._axis:
+            if axis:
+                if axis.name == name:
+                    return axis
+        raise RuntimeError(f"Could not find an axis with name {name}")
+
+    @threadlocked
+    def clear_trajectory_generator(self):
+        self.socket_put("sc")
+        logger.info("LamNI scan stopped and deleted, moving to start position")
+
+    def add_pos_to_scan(self, positions) -> None:
+        def send_positions(parent, positions):
+            parent._min_scan_buffer_reached = False
+            for pos_index, pos in enumerate(positions):
+                parent.socket_put_and_receive(f"s{pos[0]},{pos[1]},0")
+                if pos_index > 100:
+                    parent._min_scan_buffer_reached = True
+            parent._min_scan_buffer_reached = True
+
+        threading.Thread(target=send_positions, args=(self, positions), daemon=True).start()
+
+    @retry_once
+    @threadlocked
+    def get_scan_status(self):
+        return_table = (self.socket_put_and_receive(f"sr")).split(",")
+        if len(return_table) != 3:
+            raise RtCommunicationError(
+                f"Expected to receive 3 return values. Instead received {return_table}"
+            )
+        mode = int(return_table[0])
+        # mode 0: direct positioning
+        # mode 1: running internal timer (not tested/used anymore)
+        # mode 2: rt point scan running
+        # mode 3: rt point scan starting
+        # mode 5/6: rt continuous scanning (not available in LamNI)
+        number_of_positions_planned = int(return_table[1])
+        current_position_in_scan = int(return_table[2])
+        return (mode, number_of_positions_planned, current_position_in_scan)
+
+    @threadlocked
+    def start_scan(self):
+        interferometer_feedback_not_running = int((self.socket_put_and_receive("J2")).split(",")[0])
+        if interferometer_feedback_not_running == 1:
+            logger.error(
+                "Cannot start scan because feedback loop is not running or there is an interferometer error."
+            )
+            raise RtError(
+                "Cannot start scan because feedback loop is not running or there is an interferometer error."
+            )
+            # here exception
+        (mode, number_of_positions_planned, current_position_in_scan) = self.get_scan_status()
+
+        if number_of_positions_planned == 0:
+            logger.error("Cannot start scan because no target positions are planned.")
+            raise RtError("Cannot start scan because no target positions are planned.")
+            # hier exception
+        # start a point-by-point scan (for cont scan in flomni it would be "sa")
+        self.socket_put_and_receive("sd")
+
+    def start_readout(self):
+        readout = threading.Thread(target=self.read_positions_from_sampler)
+        readout.start()
+
+    def _update_flyer_device_info(self):
+        flyer_info = self._get_flyer_device_info()
+        self.get_device_manager().producer.set(
+            MessageEndpoints.device_info("rt_scan"),
+            messages.DeviceInfoMessage(device="rt_scan", info=flyer_info).dumps(),
+        )
+
+    def _get_flyer_device_info(self) -> dict:
+        return {
+            "device_name": self.name,
+            "device_attr_name": getattr(self, "attr_name", ""),
+            "device_dotted_name": getattr(self, "dotted_name", ""),
+            "device_info": {
+                "device_base_class": "ophydobject",
+                "signals": [],
+                "hints": {"fields": ["average_x_st_fzp", "average_y_st_fzp"]},
+                "describe": {},
+                "describe_configuration": {},
+                "sub_devices": [],
+                "custom_user_access": [],
+            },
+        }
+
+    def kickoff(self, metadata):
+        self.readout_metadata = metadata
+        while not self._min_scan_buffer_reached:
+            time.sleep(0.001)
+        self.start_scan()
+        time.sleep(0.1)
+        self.start_readout()
+
+    def _get_signals_from_table(self, return_table) -> dict:
+        self.average_stdeviations_x_st_fzp += float(return_table[5])
+        self.average_stdeviations_y_st_fzp += float(return_table[8])
+        self.average_lamni_angle += float(return_table[19])
+        signals = {
+            "target_x": {"value": float(return_table[3])},
+            "average_x_st_fzp": {"value": float(return_table[4])},
+            "stdev_x_st_fzp": {"value": float(return_table[5])},
+            "target_y": {"value": float(return_table[6])},
+            "average_y_st_fzp": {"value": float(return_table[7])},
+            "stdev_y_st_fzp": {"value": float(return_table[8])},
+            "average_cap1": {"value": float(return_table[9])},
+            "stdev_cap1": {"value": float(return_table[10])},
+            "average_cap2": {"value": float(return_table[11])},
+            "stdev_cap2": {"value": float(return_table[12])},
+            "average_cap3": {"value": float(return_table[13])},
+            "stdev_cap3": {"value": float(return_table[14])},
+            "average_cap4": {"value": float(return_table[15])},
+            "stdev_cap4": {"value": float(return_table[16])},
+            "average_cap5": {"value": float(return_table[17])},
+            "stdev_cap5": {"value": float(return_table[18])},
+            "average_angle_interf_ST": {"value": float(return_table[19])},
+            "stdev_angle_interf_ST": {"value": float(return_table[20])},
+            "average_stdeviations_x_st_fzp": {
+                "value": self.average_stdeviations_x_st_fzp / (int(return_table[0]) + 1)
+            },
+            "average_stdeviations_y_st_fzp": {
+                "value": self.average_stdeviations_y_st_fzp / (int(return_table[0]) + 1)
+            },
+            "average_lamni_angle": {"value": self.average_lamni_angle / (int(return_table[0]) + 1)},
+        }
+        return signals
+
+    def read_positions_from_sampler(self):
+        # this was for reading after the scan completed
+        number_of_samples_to_read = 1  # self.get_scan_status()[1]  #number of valid samples, will be updated upon first data read
+
+        read_counter = 0
+        previous_point_in_scan = 0
+
+        self.average_stdeviations_x_st_fzp = 0
+        self.average_stdeviations_y_st_fzp = 0
+        self.average_lamni_angle = 0
+
+        mode, number_of_positions_planned, current_position_in_scan = self.get_scan_status()
+
+        # if not (mode==2 or mode==3):
+        #    error
+        self.get_device_manager().producer.set_and_publish(
+            MessageEndpoints.device_status("rt_scan"),
+            messages.DeviceStatusMessage(
+                device="rt_scan", status=1, metadata=self.readout_metadata
+            ).dumps(),
+        )
+        # while scan is running
+        while mode > 0:
+            # logger.info(f"Current scan position {current_position_in_scan} out of {number_of_positions_planned}")
+            mode, number_of_positions_planned, current_position_in_scan = self.get_scan_status()
+            time.sleep(0.01)
+            if current_position_in_scan > 5:
+                while current_position_in_scan > read_counter + 1:
+                    return_table = (self.socket_put_and_receive(f"r{read_counter}")).split(",")
+                    # logger.info(f"{return_table}")
+                    logger.info(f"Read {read_counter} out of {number_of_positions_planned}")
+
+                    read_counter = read_counter + 1
+
+                    signals = self._get_signals_from_table(return_table)
+
+                    self.publish_device_data(signals=signals, pointID=int(return_table[0]))
+
+        time.sleep(0.05)
+
+        # read the last samples even though scan is finished already
+        while number_of_positions_planned > read_counter:
+            return_table = (self.socket_put_and_receive(f"r{read_counter}")).split(",")
+            logger.info(f"Read {read_counter} out of {number_of_positions_planned}")
+            # logger.info(f"{return_table}")
+            read_counter = read_counter + 1
+
+            signals = self._get_signals_from_table(return_table)
+            self.publish_device_data(signals=signals, pointID=int(return_table[0]))
+
+        self.get_device_manager().producer.set_and_publish(
+            MessageEndpoints.device_status("rt_scan"),
+            messages.DeviceStatusMessage(
+                device="rt_scan", status=0, metadata=self.readout_metadata
+            ).dumps(),
+        )
+
+        logger.info(
+            f"LamNI statistics: Average of all standard deviations: x {self.average_stdeviations_x_st_fzp/number_of_samples_to_read}, y {self.average_stdeviations_y_st_fzp/number_of_samples_to_read}, angle {self.average_lamni_angle/number_of_samples_to_read}."
+        )
+
+    def publish_device_data(self, signals, pointID):
+        self.get_device_manager().producer.send(
+            MessageEndpoints.device_read("rt_lamni"),
+            messages.DeviceMessage(
+                signals=signals,
+                metadata={"pointID": pointID, **self.readout_metadata},
+            ).dumps(),
+        )
+
+    def feedback_status_angle_lamni(self) -> bool:
+        return_table = (self.socket_put_and_receive(f"J7")).split(",")
+        logger.debug(
+            f"LamNI angle interferomter status {bool(return_table[0])}, position {float(return_table[1])}, signal {float(return_table[2])}"
+        )
+        return bool(return_table[0])
+
+    def feedback_enable_with_reset(self):
+        if not self.feedback_status_angle_lamni():
+            self.feedback_disable_and_even_reset_lamni_angle_interferometer()
+            logger.info(f"LamNI resetting interferometer inclusive angular interferomter.")
+        else:
+            self.feedback_disable()
+            logger.info(
+                f"LamNI resetting interferomter except angular interferometer which is already running."
+            )
+
+        # set these as closed loop target position
+
+        self.socket_put(f"pa0,0")
+        self.get_axis_by_name("rtx").user_setpoint.setpoint = 0
+        self.socket_put(f"pa1,0")
+        self.get_axis_by_name("rty").user_setpoint.setpoint = 0
+        self.socket_put(
+            f"pa2,0"
+        )  # we set all three outputs of the traj. gen. although in LamNI case only 0,1 are used
+        self.clear_trajectory_generator()
+
+        self.get_device_manager().devices.lsamrot.obj.move(0, wait=True)
+
+        galil_controller_rt_status = (
+            self.get_device_manager().devices.lsamx.obj.controller.lgalil_is_air_off_and_orchestra_enabled()
+        )
+
+        if galil_controller_rt_status == 0:
+            logger.error(
+                "Cannot enable feedback. The small rotation air is on and/or orchestra disabled by the motor controller."
+            )
+            raise RtError(
+                "Cannot enable feedback. The small rotation air is on and/or orchestra disabled by the motor controller."
+            )
+
+        time.sleep(0.03)
+
+        lsamx_user_params = self.get_device_manager().devices.lsamx.user_parameter
+        if lsamx_user_params is None or lsamx_user_params.get("center") is None:
+            raise RuntimeError("lsamx center is not defined")
+        lsamy_user_params = self.get_device_manager().devices.lsamy.user_parameter
+        if lsamy_user_params is None or lsamy_user_params.get("center") is None:
+            raise RuntimeError("lsamy center is not defined")
+        lsamx_center = lsamx_user_params.get("center")
+        lsamy_center = lsamy_user_params.get("center")
+        self.get_device_manager().devices.lsamx.obj.move(lsamx_center, wait=True)
+        self.get_device_manager().devices.lsamy.obj.move(lsamy_center, wait=True)
+        self.socket_put("J1")
+
+        _waitforfeedbackctr = 0
+
+        interferometer_feedback_not_running = int((self.socket_put_and_receive("J2")).split(",")[0])
+
+        while interferometer_feedback_not_running == 1 and _waitforfeedbackctr < 100:
+            time.sleep(0.01)
+            _waitforfeedbackctr = _waitforfeedbackctr + 1
+            interferometer_feedback_not_running = int(
+                (self.socket_put_and_receive("J2")).split(",")[0]
+            )
+
+        self.set_device_enabled("lsamx", False)
+        self.set_device_enabled("lsamy", False)
+        self.set_device_enabled("loptx", False)
+        self.set_device_enabled("lopty", False)
+        self.set_device_enabled("loptz", False)
+
+        if interferometer_feedback_not_running == 1:
+            logger.error(
+                "Cannot start scan because feedback loop is not running or there is an interferometer error."
+            )
+            raise RtError(
+                "Cannot start scan because feedback loop is not running or there is an interferometer error."
+            )
+
+        time.sleep(0.01)
+
+        # ptychography_alignment_done = 0
+
+    def set_device_enabled(self, device_name: str, enabled: bool) -> None:
+        """enable / disable a device"""
+        if device_name not in self.get_device_manager().devices:
+            logger.warning(
+                f"Device {device_name} is not configured and cannot be enabled/disabled."
+            )
+            return
+        self.get_device_manager().devices[device_name].enabled_set = enabled
+
+
+class RtSignalBase(SocketSignal):
+    def __init__(self, signal_name, **kwargs):
+        self.signal_name = signal_name
+        super().__init__(**kwargs)
+        self.controller = self.parent.controller
+        self.sock = self.parent.controller.sock
+
+
+class RtSignalRO(RtSignalBase):
+    def __init__(self, signal_name, **kwargs):
+        super().__init__(signal_name, **kwargs)
+        self._metadata["write_access"] = False
+
+    def _socket_set(self, val):
+        raise ReadOnlyError("Read-only signals cannot be set")
+
+
+class RtReadbackSignal(RtSignalRO):
+    @retry_once
+    @threadlocked
+    def _socket_get(self) -> float:
+        """Get command for the readback signal
+
+        Returns:
+        float: Readback value after adjusting for sign and motor resolution.
+        """
+        return_table = (self.controller.socket_put_and_receive(f"J4")).split(",")
+        print(return_table)
+        if self.parent.axis_Id_numeric == 0:
+            readback_index = 2
+        elif self.parent.axis_Id_numeric == 1:
+            readback_index = 1
+        else:
+            raise RtError("Currently, only two axes are supported.")
+
+        current_pos = float(return_table[readback_index])
+
+        current_pos *= self.parent.sign
+        return current_pos
+
+
+class RtSetpointSignal(RtSignalBase):
+    setpoint = 0
+
+    def _socket_get(self) -> float:
+        """Get command for receiving the setpoint / target value.
+        The value is not pulled from the controller but instead just the last setpoint used.
+
+        Returns:
+            float: setpoint / target value
+        """
+        return self.setpoint
+
+    @retry_once
+    @threadlocked
+    def _socket_set(self, val: float) -> None:
+        """Set a new target value / setpoint value. Before submission, the target value is adjusted for the axis' sign.
+        Furthermore, it is ensured that all axes are referenced before a new setpoint is submitted.
+
+        Args:
+            val (float): Target value / setpoint value
+
+        Raises:
+            RtError: Raised if interferometer feedback is disabled.
+
+        """
+        interferometer_feedback_not_running = int(
+            (self.controller.socket_put_and_receive("J2")).split(",")[0]
+        )
+        if interferometer_feedback_not_running != 0:
+            raise RtError(
+                "The interferometer feedback is not running. Either it is turned off or and interferometer error occured."
+            )
+        self.set_with_feedback_disabled(val)
+
+    def set_with_feedback_disabled(self, val):
+        target_val = val * self.parent.sign
+        self.setpoint = target_val
+        self.controller.socket_put(f"pa{self.parent.axis_Id_numeric},{target_val:.4f}")
+
+
+class RtMotorIsMoving(RtSignalRO):
+    def _socket_get(self):
+        return self.controller.is_axis_moving(self.parent.axis_Id_numeric)
+
+    def get(self):
+        val = super().get()
+        if val is not None:
+            self._run_subs(
+                sub_type=self.SUB_VALUE,
+                value=val,
+                timestamp=time.time(),
+            )
+        return val
+
+
+class RtFeedbackRunning(RtSignalRO):
+    @threadlocked
+    def _socket_get(self):
+        if int((self.controller.socket_put_and_receive("J2")).split(",")[0]) == 0:
+            return 1
+        else:
+            return 0
+
+
+class RtMotor(Device, PositionerBase):
+    USER_ACCESS = ["controller"]
+    readback = Cpt(
+        RtReadbackSignal,
+        signal_name="readback",
+        kind="hinted",
+    )
+    user_setpoint = Cpt(RtSetpointSignal, signal_name="setpoint")
+
+    motor_is_moving = Cpt(RtMotorIsMoving, signal_name="motor_is_moving", kind="normal")
+    high_limit_travel = Cpt(Signal, value=0, kind="omitted")
+    low_limit_travel = Cpt(Signal, value=0, kind="omitted")
+
+    SUB_READBACK = "readback"
+    SUB_CONNECTION_CHANGE = "connection_change"
+    _default_sub = SUB_READBACK
+
+    def __init__(
+        self,
+        axis_Id,
+        prefix="",
+        *,
+        name,
+        kind=None,
+        read_attrs=None,
+        configuration_attrs=None,
+        parent=None,
+        host="mpc2680.psi.ch",
+        port=3333,
+        sign=1,
+        socket_cls=SocketIO,
+        device_manager=None,
+        limits=None,
+        **kwargs,
+    ):
+        self.axis_Id = axis_Id
+        self.sign = sign
+        self.controller = RtController(socket=socket_cls(host=host, port=port))
+        self.controller.set_axis(axis=self, axis_nr=self.axis_Id_numeric)
+        self.device_manager = device_manager
+        self.tolerance = kwargs.pop("tolerance", 0.5)
+
+        super().__init__(
+            prefix,
+            name=name,
+            kind=kind,
+            read_attrs=read_attrs,
+            configuration_attrs=configuration_attrs,
+            parent=parent,
+            **kwargs,
+        )
+        self.readback.name = self.name
+        self.controller.subscribe(
+            self._update_connection_state, event_type=self.SUB_CONNECTION_CHANGE
+        )
+        self._update_connection_state()
+
+        # self.readback.subscribe(self._forward_readback, event_type=self.readback.SUB_VALUE)
+        if limits is not None:
+            assert len(limits) == 2
+            self.low_limit_travel.put(limits[0])
+            self.high_limit_travel.put(limits[1])
+
+    @property
+    def limits(self):
+        return (self.low_limit_travel.get(), self.high_limit_travel.get())
+
+    @property
+    def low_limit(self):
+        return self.limits[0]
+
+    @property
+    def high_limit(self):
+        return self.limits[1]
+
+    def check_value(self, pos):
+        """Check that the position is within the soft limits"""
+        low_limit, high_limit = self.limits
+
+        if low_limit < high_limit and not (low_limit <= pos <= high_limit):
+            raise LimitError(f"position={pos} not within limits {self.limits}")
+
+    def _update_connection_state(self, **kwargs):
+        for walk in self.walk_signals():
+            walk.item._metadata["connected"] = self.controller.connected
+
+    def _forward_readback(self, **kwargs):
+        kwargs.pop("sub_type")
+        self._run_subs(sub_type="readback", **kwargs)
+
+    @raise_if_disconnected
+    def move(self, position, wait=True, **kwargs):
+        """Move to a specified position, optionally waiting for motion to
+        complete.
+
+        Parameters
+        ----------
+        position
+            Position to move to
+        moved_cb : callable
+            Call this callback when movement has finished. This callback must
+            accept one keyword argument: 'obj' which will be set to this
+            positioner instance.
+        timeout : float, optional
+            Maximum time to wait for the motion. If None, the default timeout
+            for this positioner is used.
+
+        Returns
+        -------
+        status : MoveStatus
+
+        Raises
+        ------
+        TimeoutError
+            When motion takes longer than `timeout`
+        ValueError
+            On invalid positions
+        RuntimeError
+            If motion fails other than timing out
+        """
+        self._started_moving = False
+        timeout = kwargs.pop("timeout", 100)
+        status = super().move(position, timeout=timeout, **kwargs)
+        self.user_setpoint.put(position, wait=False)
+
+        def move_and_finish():
+            while self.motor_is_moving.get():
+                print("motor is moving")
+                val = self.readback.read()
+                self._run_subs(
+                    sub_type=self.SUB_READBACK,
+                    value=val,
+                    timestamp=time.time(),
+                )
+                time.sleep(0.01)
+            print("Move finished")
+            self._done_moving()
+
+        threading.Thread(target=move_and_finish, daemon=True).start()
+        try:
+            if wait:
+                status_wait(status)
+        except KeyboardInterrupt:
+            self.stop()
+            raise
+
+        return status
+
+    @property
+    def axis_Id(self):
+        return self._axis_Id_alpha
+
+    @axis_Id.setter
+    def axis_Id(self, val):
+        if isinstance(val, str):
+            if len(val) != 1:
+                raise ValueError(f"Only single-character axis_Ids are supported.")
+            self._axis_Id_alpha = val
+            self._axis_Id_numeric = ord(val.lower()) - 97
+        else:
+            raise TypeError(f"Expected value of type str but received {type(val)}")
+
+    @property
+    def axis_Id_numeric(self):
+        return self._axis_Id_numeric
+
+    @axis_Id_numeric.setter
+    def axis_Id_numeric(self, val):
+        if isinstance(val, int):
+            if val > 26:
+                raise ValueError(f"Numeric value exceeds supported range.")
+            self._axis_Id_alpha = val
+            self._axis_Id_numeric = (chr(val + 97)).capitalize()
+        else:
+            raise TypeError(f"Expected value of type int but received {type(val)}")
+
+    def kickoff(self, metadata, **kwargs) -> None:
+        self.controller.kickoff(metadata)
+
+    @property
+    def egu(self):
+        """The engineering units (EGU) for positions"""
+        return "um"
+
+    # how is this used later?
+
+    def stage(self) -> List[object]:
+        return super().stage()
+
+    def unstage(self) -> List[object]:
+        return super().unstage()
+
+    def stop(self, *, success=False):
+        self.controller.stop_all_axes()
+        return super().stop(success=success)
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG)
+
+    mock = False
+    if not mock:
+        rty = RtLamniMotor("B", name="rty", host="mpc2680.psi.ch", port=3333, sign=1)
+        rty.stage()
+        status = rty.move(0, wait=True)
+        status = rty.move(10, wait=True)
+        rty.read()
+
+        rty.get()
+        rty.describe()
+
+        rty.unstage()
+    else:
+        from ophyd_devices.utils.socket import SocketMock
+
+        rtx = RtLamniMotor("A", name="rtx", host="mpc2680.psi.ch", port=3333, socket_cls=SocketMock)
+        rty = RtLamniMotor("B", name="rty", host="mpc2680.psi.ch", port=3333, socket_cls=SocketMock)
+        rtx.stage()
+        # rty.stage()

ophyd_devices/smaract/smaract_controller.py

@@ -3,8 +3,10 @@ import functools
 import json
 import logging
 import os
+import time
 
 import numpy as np
+from prettytable import PrettyTable
 from typeguard import typechecked
 
 from ophyd_devices.smaract.smaract_errors import (
@@ -73,7 +75,13 @@ class SmaractSensors:
 class SmaractController(Controller):
     _axes_per_controller = 6
     _initialized = False
-    USER_ACCESS = ["socket_put_and_receive", "smaract_show_all", "move_open_loop_steps"]
+    USER_ACCESS = [
+        "socket_put_and_receive",
+        "smaract_show_all",
+        "move_open_loop_steps",
+        "find_reference_mark",
+        "describe",
+    ]
 
     def __init__(
         self,
@@ -117,7 +125,19 @@ class SmaractController(Controller):
         raise_if_not_status=False,
     ) -> str:
         self.socket_put(val)
-        return_val = self.socket_get()
+        return_val = ""
+        max_wait_time = 1
+        elapsed_time = 0
+        sleep_time = 0.01
+        while True:
+            ret = self.socket_get()
+            return_val += ret
+            if ret.endswith("\n"):
+                break
+            time.sleep(sleep_time)
+            elapsed_time += sleep_time
+            if elapsed_time > max_wait_time:
+                break
         if remove_trailing_chars:
             return_val = self._remove_trailing_characters(return_val)
             logger.debug(f"Sending {val}; Returned {return_val}")
@@ -234,15 +254,15 @@ class SmaractController(Controller):
     @axis_checked
     @typechecked
     def move_open_loop_steps(
-        self, axis_Id_numeric: int, steps: int, amplitude: int = 2000, frequency: int = 500
+        self, axis_Id_numeric: int, steps: int, amplitude: int = 4000, frequency: int = 2000
     ) -> None:
-        """Move open loop steps
+        """Move open loop steps. It performs a burst of steps with the given parameters.
 
         Args:
             axis_Id_numeric (int): Axis number.
-            steps (float): Relative position to move to in mm.
-            hold_time (int, optional): Specifies how long (in milliseconds) the position is actively held after reaching the target. The valid range is 0..60,000. A 0 deactivates this feature, a value of 60,000 is infinite (until manually stopped, see S command). Defaults to 1000.
-
+            steps (int): Number and direction of steps to perform. The valid range is -30,000..30,000. A value of 0 stops the positioner, but see S command. A value of 30,000 or -30,000 performs an unbounded move. This should be used with caution since the positioner will only stop on an S command.
+            amplitude (int): Amplitude that the steps are performed with. Lower amplitude values result in a smaller step width. The parameter must be given as a 12bit value (range 0..4,095). 0 corresponds to 0V, 4,095 to 100V. Default: 4000
+            frequency (int): Frequency in Hz that the steps are performed with. The valid range is 1..18,500. Default: 2000.
         """
         self.socket_put_and_receive(
             f"MST{axis_Id_numeric},{steps},{amplitude},{frequency}",
@@ -374,6 +394,15 @@ class SmaractController(Controller):
         if self._message_starts_with(return_val, f":ST{axis_Id_numeric}"):
             return self._sensors.avail_sensors.get(int(return_val.strip(f":ST{axis_Id_numeric},")))
 
+    @retry_once
+    @axis_checked
+    def find_reference_mark(
+        self, axis_Id_numeric: int, direction: int, holdTime: int, autoZero: int
+    ) -> None:
+        return_val = self.socket_put_and_receive(
+            f"FRM{axis_Id_numeric},{direction},{holdTime},{autoZero}"
+        )
+
     @retry_once
     @axis_checked
     def set_closed_loop_move_speed(self, axis_Id_numeric: int, move_speed: float) -> None:
@@ -419,7 +448,7 @@ class SmaractController(Controller):
             "Closed Loop Speed",
             "Position",
         ]
-        for ax in range(self._Smaract_axis_per_controller):
+        for ax in range(self._axes_per_controller):
             axis = self._axis[ax]
             if axis is not None:
                 t.add_row(
@@ -428,7 +457,7 @@ class SmaractController(Controller):
                         axis.name,
                         axis.connected,
                         self.axis_is_referenced(axis.axis_Id_numeric),
-                        self.get_closed_loop_move_speed(axis.axis_Id),
+                        self.get_closed_loop_move_speed(axis.axis_Id_numeric),
                         axis.readback.read().get(axis.name).get("value"),
                     ]
                 )

ophyd_devices/utils/controller.py

@@ -57,10 +57,6 @@ class Controller(OphydObject):
         labels=None,
         kind=None,
     ):
-        self.sock = None
-        self._socket_cls = socket_cls
-        self._socket_host = socket_host
-        self._socket_port = socket_port
         if not self._initialized:
             super().__init__(
                 name=name, attr_name=attr_name, parent=parent, labels=labels, kind=kind
@@ -69,6 +65,10 @@ class Controller(OphydObject):
             self._axis = []
             self._initialize()
             self._initialized = True
+            self.sock = None
+            self._socket_cls = socket_cls
+            self._socket_host = socket_host
+            self._socket_port = socket_port
 
     def _initialize(self):
         self._connected = False
@@ -133,7 +133,7 @@ class Controller(OphydObject):
 
     def off(self) -> None:
         """Close the socket connection to the controller"""
-        if self.connected or self.sock is not None:
+        if self.connected and self.sock is not None:
             self.sock.close()
             self.connected = False
             self.sock = None

ophyd_devices/utils/socket.py

@@ -179,18 +179,29 @@ class SocketSignal(abc.ABC, Signal):
 class SocketIO:
     """SocketIO helper class for TCP IP connections"""
 
-    def __init__(self, host, port):
+    def __init__(self, host, port, max_retry=10):
         self.host = host
         self.port = port
         self.is_open = False
+        self.max_retry = max_retry
         self._initialize_socket()
 
     def connect(self):
         print(f"connecting to {self.host} port {self.port}")
         # self.sock.create_connection((host, port))
-        if self.sock is None:
-            self._initialize_socket()
-        self.sock.connect((self.host, self.port))
+        retry_count = 0
+        while True:
+            try:
+                if self.sock is None:
+                    self._initialize_socket()
+                self.sock.connect((self.host, self.port))
+                break
+            except Exception as exc:
+                self.sock = None
+                time.sleep(2)
+                retry_count += 1
+                if retry_count > self.max_retry:
+                    raise exc
 
     def _put(self, msg_bytes):
         logger.debug(f"put message: {msg_bytes}")