AdvancedHMI Software
General Category => Support Questions => Topic started by: clanman on September 24, 2014, 08:04:18 AM
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Hi to all.
Being a newbie to this great package, I have a question maybe someone out there could answer.
I am using AdvancedHMI with Codesys V2.3.9 and 2 Eaton HMI/PLC on OPC comms.
If a PLC is offline, I get an exception error in Public Function Write
I have put on onerror resume next in which seems to work ok and Comms starts again when PLC is powered.
Is this an expected event.
Cheers.
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It is normal for an exception to be thrown if the driver cannot read/write to the controller. Any read or writes should be inside an Try-Catch block.
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Many thanks