Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> · Wed, 4 Aug 2021 22:31:58 +0000

Did you look at the screens for all 4 positioners and all 70 detectors to see if there is a disconnected PV?

Send the output of

dbpr scanrec 2

Mark

Sent from my iPhone

On Aug 4, 2021, at 5:04 PM, Li, Ji via Tech-talk <tech-talk at aps.anl.gov> wrote:

Hi,

We have an IOC doing ramps (1-D scan) using sscan record. It had been working properly in Debian 7 until recently we switched to RHEL8. When setting the EXSC field of the sscan record to 1, the scan didn't start as expected. The IOC reported:

----------------------------------------------
Starting new scan with unexpected faze ('SCAN_PENDING').
----------------------------------------------

The SMSG field or the sscan record read:

----------------------------------------------
Waiting for PV's to connect
----------------------------------------------

And the CPT field remained 0.

The sscan record has D01PV and P1PV associated with PVs also created in this IOC, both shown as connected, readable and writable from cainfo.

Is it possible to find out what PVs, or actually something else causing this problem?

Thanks for any comments.

Ji Li

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System