Experimental Physics and
Industrial Control System

Florian Feldbauer via Tech-talk <tech-talk at aps.anl.gov> · Fri, 14 Jul 2023 10:39:22 +0200

Hey again,

I found the issue. All records have a db-link in their SDIS field to a

bo record.

This bo record switches on/off the power supply of the device, so if

this is set to 0 communication with the device does not work.

The record was set to 1 during initialization but still in UDF_ALARM

state which was causing the LINK_ALARM for all other records.

Cheers,
Florian

On 7/14/23 10:27, Florian Feldbauer via Tech-talk wrote:

Hey all,

I have a strange behaviour I haven't seen before.

In my IOC all records are set to STAT = LINK_ALARM and SEVR = INVALID.

I checked the code of the device support, that is used, but there are

only conditions when a record is set to READ_ALARM or WRITE_ALARM.

Is there any condition in the record processing itself, where a record

can be set to LINK_ALARM?

Base 7.0.4.1 is used.

The records have a DB_LINK in their SDIS field and some have a FLNK.

Cheers,
Florian

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Ruhr-Universität Bochum
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Dr. Florian Feldbauer
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System