Bases: KPFTranslatorFunction
Stop the agitator motion.
ARGS:
None
Source code in kpf/spectrograph/StopAgitator.py
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42 | class StopAgitator(KPFTranslatorFunction):
'''Stop the agitator motion.
ARGS:
=====
None
'''
@classmethod
def pre_condition(cls, args, logger, cfg):
pass
@classmethod
def perform(cls, args, logger, cfg):
agitator = ktl.cache('kpfmot', 'AGITATOR')
if agitator.read() == 'Stopped':
log.debug('Agitator is stopped')
else:
log.debug('Stopping agitator')
try:
agitator.write('Stop')
except Exception as e:
log.warning('Write to kpfmot.AGITATOR failed')
log.debug(e)
log.warning('Retrying')
time.sleep(1)
agitator.write('Stop')
@classmethod
def post_condition(cls, args, logger, cfg):
timeout = cfg.getfloat('times', 'agitator_startup_time', fallback=0.325)
success = ktl.waitFor('$kpfmot.AGITATOR == Stopped', timeout=5*timeout)
if success is not True:
agitator = ktl.cache('kpfmot', 'AGITATOR')
raise FailedToReachDestination(agitator.read(), 'Stopped')
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