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Added alarms

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Change-Id: Idd06278e44e01522ddf904b56a452ce8c704b5a6
This commit is contained in:
Oksana Shliakhtun 2023-02-02 17:22:08 +01:00
parent d62076128a
commit 69dd011260
2 changed files with 27 additions and 11 deletions
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1
cfg/ls340_cfg.py
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@ -2,6 +2,7 @@ Node('ls340test.psi.ch',
'ls340 test',
'tcp://5000',
)
Mod('io',
'frappy_psi.lakeshore.Ls340IO',
'communication to ls340',

37
frappy_psi/lakeshore.py
View File

@ -22,7 +22,8 @@ from math import log2
from frappy.core import Readable, Parameter, IntRange, EnumType, FloatRange, \
StringIO, HasIO, StringType, Property, Writable, Drivable, IDLE, ERROR, \
Attached, StructOf
Attached, StructOf, WARN
from frappy_psi.mixins import HasOutputModule, HasControlledBy
@ -45,14 +46,16 @@ class LakeShore(HasIO):
return [float(num) for num in reply.split(',')]
class Sensor340(HasIO, Readable):
class Sensor340(LakeShore, Readable):
"""A channel of 340TC"""
# define the communication class to create the IO module
ioClass = Ls340IO
channel = Property('lakeshore channel', StringType())
# define or alter the parameters
# relay_mode = Property('relay setting mode', IntRange(0, 2))
# relay = Property('relay high/low', IntRange(1, 2))
alarm = Parameter('alarm limits', FloatRange(unit='K'), readonly=False)
# # define or alter the parameters
# as Readable.value exists already, we give only the modified property 'unit'
value = Parameter(unit='K')
@ -70,18 +73,27 @@ class Sensor340(HasIO, Readable):
return ERROR, 'temperature overrange'
if c >= 16:
return ERROR, 'temperature underrange'
# do not check for old reading -> this happens regularely on NTCs with T comp
# do not check for old reading -> this happens regularly on NTCs with T comp
if c % 2:
return ERROR, 'invalid reading'
# ask for high alarm status and return warning
if '1' in str(self.communicate(f'ALARMST? {self.channel}')):
return Warning
return IDLE, ''
def write_alarm(self):
return self.set_par(f'ALARM {self.channel}, 1, 1, {self.alarm}, 0, 0, 2')
def read_alarm(self):
return self.get_par(f'ALARM? {self.channel}')[0]
class HeaterOutput(LakeShore, HasControlledBy, HasIO, Writable):
loop = Property('lakeshore loop', IntRange(1, 2), default=1)
channel = Property('attached channel', StringType())
max_power = Parameter('max heater power', datatype=FloatRange(0, 100), unit='W', readonly=False)
value = Parameter('heater output', datatype=FloatRange(0, 100), unit='W')
target = Parameter('manual heater output', datatype=FloatRange(0, 100), unit='W')
loop = Property('lakeshore loop', IntRange(1, 2), default=1)
channel = Property('attached channel', StringType())
resistance = Property('heater resistance', datatype=FloatRange(10, 1000))
current = Property('heater current', datatype=FloatRange(0, 2))
_range = 0
@ -120,7 +132,8 @@ class HeaterOutput(LakeShore, HasControlledBy, HasIO, Writable):
self._range = irange
self.communicate(f'CLIMIT {self.loop},{self.SETPOINTLIMS},0,0,{icurrent},{irange};'
f'RANGE {irange};'
f'CDISP {self.loop},1,{self.resistance},0;RANGE?')
f'CDISP {self.loop},1,{self.resistance},0;RANGE?;'
f'RELAY? 1') #only high relay
return self.read_max_power()
def read_max_power(self):
@ -142,9 +155,6 @@ class HeaterOutput(LakeShore, HasControlledBy, HasIO, Writable):
def power_to_percent(self, power):
return (power / self._max_power) ** (1 / 2) * 100 # limit
def read_value(self):
return self.percent_to_power(float(self.communicate(f'HTR?')))
def read_status(self):
return self.STATUS_MAP[int(self.communicate(f'HTRST?'))]
@ -162,6 +172,9 @@ class HeaterOutput(LakeShore, HasControlledBy, HasIO, Writable):
f'CMODE {self.loop}, {int(mode)};'
f'RANGE?')
def read_value(self):
return self.percent_to_power(float(self.communicate(f'HTR?')))
class TemperatureLoop340(HasOutputModule, Sensor340, Drivable, LakeShore):
target = Parameter(unit='K')
@ -196,3 +209,5 @@ class TemperatureLoop340(HasOutputModule, Sensor340, Drivable, LakeShore):