Experimental Physics and
Industrial Control System

Dave Reid <[email protected]> · Thu, 15 Apr 2010 12:04:30 -0700

I have a database that communicates via RS-232 to a vacuum gauge
controller. I do this by setting up an Analog In record, that has the
DTYP set to "stream". These Analog In records are part of a processing
chain in the database.
What happens is that one of my AI records goes into the "Invalid" alarm
state, and this breaks the processing chain, and the only way we have
been able to recover from this is to reboot the IOC.
So the questions are:

1-Why are we getting into this alarm state? Is this something that the
stream device support is doing?

2-How does one recover gracefully from an "Invalid" alarm state?

3-Why is there not an "IVOA" field for input records?
Thanks....
dave

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System