Experimental Physics and
Industrial Control System

Eric Williams <[email protected]> · Tue, 22 Jan 2008 17:40:24 -0800

I'm trying to drive a GPIB device with a genSub record through an
asynRecord, but I've been unable to change some of the asynRecord fields
that I need to perform all the necessary control functions.
In particular, I've been unable to modify TMOD or NOWT, which I've
linked to output fields of the genSub record. (There are probably other
asynRecord fields that act similarly, but these are the ones I've run
into so far.) Writing to AOUT works OK.
If I link my genSub record output fields instead to "normal" records
(eg: longout), then the values go through just fine. But they never
show up when linked to the asynRecord fields. In contrast, I'm able to
modify these fields through dbpf on the console.
I've looked at the DBD file, and I'm not able to find any reason why one
field would be writable and another isn't. Anybody have a guess?

--

eric
Environment:
   linux-x86
   epics 3.14.9
   asyn 4-8
   genSub 4-6

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System