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<== Date ==> <== Thread ==>
Subject: Re: asyn trace masks on modbus reconnect
From: Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>
To: John Dobbins <john.dobbins at cornell.edu>
Cc: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Fri, 1 Apr 2022 00:11:11 +0000
What version of the Modbus module?

Sent from my iPhone

On Mar 31, 2022, at 6:57 PM, John Dobbins via Tech-talk <tech-talk at aps.anl.gov> wrote:


All,

We have  a WAGO plc which we read via modbus. There are just 18 PVs in this IOC, read as two blocks from the plc. All the PVs briefly go invalid for ~ 5 seconds (as reported by clients like Alarm Server, Archive Appliance)

Am I correct in assuming that if this was because the IOC lost its connection to the plc, this would be reported as an error in the IOC console [asynTraceMask is not explicitly set so it is the default value of 1?]

Thanks,

John Dobbins

Research Support Specialist
Cornell High Energy Synchrotron Source
Cornell University




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Re: asyn trace masks on modbus reconnect John Dobbins via Tech-talk
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