on 2020 Feb 24 3:08 PM
Hello,
I am trying to use SAP PCo Modbus connection to Simatic S7 1200 and write to a single tag. I defined my tag in SAP PCo in Input register (300001.00) and tags in TIA portal are defined as I10.0. When I try to run test query for TagStore I got this message: [Tag]: Exception [TargetInvocationException] - Exception has been thrown by the target of an invocation.
Tag reading works fine.
I also tried the same way using Kepware and in this scenario, I am able to write tags normally.
Anybody who had the same issue?
Thanks.
Jakub
PS: Reason using only Modbus is simply for testing.
Request clarification before answering.
Are you using MII to write the tag or PCo ?
If its MII have you checked the "Writable" box in the connection tab of the data server ?
Thanks
Kevin
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