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<== Date ==> <== Thread ==>

Subject: Asyn: disconnect and reconnect port via PV
From: "Niedermayer, Philipp" <p.niedermayer@fz-juelich.de>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Fri, 31 Aug 2018 06:27:35 +0000

Hello everyone,

 

I have implemented a soft IOC that communicates to a spectrum analyzer via asyn and stream device using vxi11:

 

vxi11Configure("device_port","$(DEVICE_IP)",0,"0.0","inst0",0,0)

 

The device has a limitation that it can only be controlled by one remote controller at a time. The current approach is to temporarily stop the entire soft IOC when required and then restart it via the st.cmd file.

 

It would be better to have a PV (e.g. a bo with CONNECTED/DISCONNECTED state) for this task, that can dis- and reconnect the asyn port.

I know that you can disable record processing by the DISA field, but that did not prevent asyn to keep up a connection to the device in background.

I found the “asynManager” which has the promising “connectDevice” and “disconnect” option, but I’m not sure how to (if at all) call them from the PV.

 

Is there a way to have such a PV? How could that be implemented?

 

Greetings and tanks in advance

Philipp



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Forschungszentrum Juelich GmbH
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Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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Replies:
Re: Asyn: disconnect and reconnect port via PV Bruno Martins
RE: Asyn: disconnect and reconnect port via PV Mark Rivers

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