Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> · Mon, 23 Aug 2021 02:20:55 +0000

You can make setIntegerParam affect the setter (i.e. the output record) by using this info tag to that output record:

info(asyn:READBACK, “1”)

You may need to add a poller thread to your driver to detect when IntegrationTime or other parameters have changed outside of EPICS. Call setIntegerParam or setDoubleParam in that thread and then call callParamCallbacks().

Mark

Sent from my iPhone

On Aug 22, 2021, at 3:33 PM, Iain Marcuson via Tech-talk <tech-talk at aps.anl.gov> wrote:

I am working with a derivative of one of the QuadEM packages (namely NSLS_EM).  The IOC uses an asynPortDriver with separate setters and getters e.g. Integration time has setter `$(P)$(R)IntegrationTime` and getter `$(P)$(R)IntegrationTime_RBV`.  Since the electrometer state can change independently of the IOC, I want to reflect the state changes in the IOC.  I use a GUI in CSS BOY, and for the most part only display the setter PVs.  Is there a way to have the IOC update the setters, ideally through ASYN?  The initial value of Integration Time is reflected in the setter on IOC startup, but attempts at changing setters using setIntegerParam() only change the getter.  What might be causing this, and can I affect both setter and getter?

Thank you,

Iain Marcuson
Software Engineer, Sydor Technologies
585.278.1168 | www.SydorTechnologies.com<http://www.SydorTechnologies.com>
Skype: iain.marcuson at sydorinstruments.com

This message has been scanned for malware by Forcepoint. www.forcepoint.com<http://www.forcepoint.com/>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System