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

Subject: RE: How to check an external PV from IOC shell
From: "Williams Jr, Ernest L." <ernesto@ornl.gov>
To: Ned Arnold <nda@aps.anl.gov>, "Zhou, Jingchen" <jingchen@slac.stanford.edu>
Cc: tech-talk@aps.anl.gov
Date: Tue, 10 Jan 2006 17:49:21 -0500
Hi,

You can at least get information about external ca connections using the
"dbcar" routine.

Thanks,
Ernest




-----Original Message-----
From: Ned Arnold [mailto:nda@aps.anl.gov]
Sent: Tue 1/10/2006 5:22 PM
To: Zhou, Jingchen
Cc: tech-talk@aps.anl.gov
Subject: Re: How to check an external PV  from IOC shell
 
Zhou, Jingchen wrote:
> Is there any simple way to check status of an external PV from IOC shell?
> For example, I am at a IOC shell
> epics>
> Is there any IOC shell command (or some way) that allow me do things like "dbpr external_PV" or "caget external_PV"?
> 
> Thanks,
> Jingchen

I am not aware of any IOC based tools that support this *directly*. It 
would be a useful utility if you chose to develop it.

However, there is always the hack!

If you have a spare record in your IOC (e.g. a soft AI record) you could ...

dbpf "softAI.INP", "externalPV"
dptr "softAI"

The STAT field will reflect if the external PV was found, the .VAL will 
reflect its value.


	Ned





References:
How to check an external PV from IOC shell Zhou, Jingchen
Re: How to check an external PV from IOC shell Ned Arnold

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