script/devices/LEEM2000.py

@@ -7,7 +7,10 @@ class LEEM2000(TcpDevice):
        self.NUMBER_MNEMONICS = 100
        self._mnemonics = None
        self._names = None
-       self.high_voltage = Channel("X11MA-ES1-PEEM:UMON", alias = "PEEM high voltage", monitored=True)     
+       try:
+            self.high_voltage = Channel("X11MA-ES1-PEEM:UMON", alias = "PEEM high voltage", monitored=True)     
+       except:
+            self.high_voltage = None
        self.debug = False
        self.retries = 1
        self.timeout = 1000
@@ -119,10 +122,10 @@ class LEEM2000(TcpDevice):
     def get_high_voltage(self):
         return  self.high_voltage.get(False)
 
-    def get_child(self, var, name=None):           
+    def get_child(self, var, name=None, scale=None):           
         if name is None:
             name=var
-        ret = LEEM2000Child(name, var, self)
+        ret = LEEM2000Child(name, var, self, scale)
         ret.initialize()
         return ret
 
@@ -203,15 +206,23 @@ class LEEM2000(TcpDevice):
         
 
 class LEEM2000Child(RegisterBase):    
-    def __init__(self,name, var, microscope):
+    def __init__(self,name, var, microscope, scale=None):
         RegisterBase.__init__(self,name)
         self.var = var
+        self.scale = scale
         self.microscope = microscope
         
     def doRead(self):
-        return self.microscope.get_value(self.var)
+        ret = self.microscope.get_value(self.var)
+        if ret is not None:
+            if self.scale is not None: 
+                ret = float(ret)*self.scale
+        return ret
 
     def doWrite(self, val):
+        if val is not None:
+            if self.scale is not None: 
+                val = float(val)/self.scale
         self.microscope.set_value(self.var, val)
 
 class LEEM2000Positioner (PositionerBase):
@@ -283,7 +294,7 @@ add_device (microscope.get_tilt('D','U', "tilt_v"), True)
 add_device (microscope.get_child("MOBJ","objective"), True) 
 add_device (microscope.get_child("OSTIGA","obj_stig_a"), True)
 add_device (microscope.get_child("OSTIGB","obj_stig_b"), True)
-add_device (microscope.get_child("MDRIVE","azimuth_rot"), True)
+add_device (microscope.get_child("MDRIVE","azimuth_rot", 0.01794), True)
 add_device (microscope.get_child("BOMBV","bv"), True)
 add_device (microscope.get_child("FIL","fil"), True)
 add_device (microscope.get_child("STV","start_voltage"), True)
@@ -321,8 +332,11 @@ class Fov(ReadonlyRegisterBase):
         self.position = 0
     
     def doRead(self):
-        return self.mic.get_preset_label()
-
+        ret = self.mic.get_preset_label()
+        if ret is not None:
+            if ":" in ret:
+                ret = ret[0:ret.rindex(":")]
+        return ret
         
 
 def init_tilt():
@@ -337,6 +351,8 @@ tilt_horizontal.polling=500
 manip_x.polling=500
 manip_y.polling=500
 fov.polling=5000
+azimuth_rot.precision=2
+azimuth_rot.polling=5000
 bv.polling=1000
 fil.polling=1000