Countable PV¶

This is the basic Python class to help in the use of simple pvs as counters.

Using EPICS-Countable PV class¶

Usage of Python Class

class py4syn.epics.CountablePVClass.CountablePV(pvName, mnemonic)[source]¶

Class to add fake ICountable support for generic PV.

Examples

>>> from py4syn.epics.CountablePVClass import CountablePV
>>>
>>> myCountable = CountablePV('LNLS:ANEL:corrente','corrente')
>>> myCountable.getValue()
>>>     

Constructor See py4syn.epics.StandardDevice See py4syn.epics.ICountable

Parameters:	pvName : string PV name (Process Variable) mnemonic : string Mnemonic

canMonitor()[source]¶

Abstract method to check if the device can or cannot be used as monitor.

Returns:	out : bool

canStopCount()[source]¶

Abstract method to check if the device can or cannot stop the count and return values.

Returns:	out : bool

getValue(**kwargs)[source]¶

Get the current value of a countable device.

Parameters:	kwargs : value Where needed informations can be passed, e.g. select which channel must be read.
Returns:	out : value Returns the current value of the device. Type of the value depends on device settings.

isCounting()[source]¶

Abstract method to check if the device is counting or not.

Returns:	out : bool

setCountTime(t)[source]¶

Abstract method to set the count time of a countable target device.

Parameters:	t : value The target count time to be set.
Returns:	out : None

setPresetValue(channel, val)[source]¶

Abstract method to set the preset count of a countable target device.

Parameters:	channel : int The monitor channel number val : int The preset value
Returns:	out : None

startCount()[source]¶: Abstract method trigger a count in a counter

stopCount()[source]¶: Abstract method stop a count in a counter

wait()[source]¶

Abstract method to wait for a count to finish.

Returns:	out : bool