Another idea of our customer Peter Junk from company "HIT":
If single communication errors with the PLC appear,
this is often uncritically. If the communication error is lasting,
a notification becomes necessary.
D_ON-Instruction is suitable for this task very well.
The variable CommErr of the example becomes only 1,
if the communication is faulty for at least 1 minute:
[<SetConfig _="PROCCFG" ver="y">
<ProcessVars>
<CommErr>
<Value>
<LDN _="/Process/Bus1/Device_0/DeviceState"/>
<D_ON time="60s"/>
</Value>
</CommErr>
</ProcessVars>
</SetConfig>]
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