Is this 701 .dll warning for PubSubs critical for the end program in the PLC?
“701 System.NullReferenceException has been handled, calling IConfigurationValidatorPlugin.CheckValue on instance of class BR.OpcUaFx.PubSub.Plugins.Extension from C:\BrAutomation\AS412\AS\TechnologyPackages\OpcUaFx\1.3.0\bin\BR.OpcUaFx.PubSub.Plugins.dll.”
I made a search and I don’t see that warning reported in the Community or our internal B&R Support chat, so I recommend to report the issue to our Support team.
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Which AS are you using? Mine is 4.12.9.18
Which AR? Mine is S4.93
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Good input from Support for another dll issue: “Then check if you have this DLL and if your security SW reports it as dangerous.”
Some colleagues do not experience this warning in our other projects. One difference is that they run with a 0484-PLC, where the project with the warning runs on a 0611
Hi Mikkel, without knowing the project and what you did (open project, open editor, project build, change CPU, .. ) when / how often in a row you observed the error in the output, it is difficult to tell.
In my experience so far, the warning shown does not do any harm. Typically this is purely AS related (around PubSub editor and the internal life cycle working with the plugin / dll) and does not affect program execution on PLC.
Are your colleagues using the same AS version or a newer one?
In my opinion, if your PubSub editor checks do work (e.g. can select related network interfaces, export a config,..) and PubSub uabinary is created, respectively in turn PubSub communication is working on the target it should be fine. Though still not nice, that the warning is shown.