on 03-25-2015 10:40 AM
Hi,
I am writing values to a datablock on a PLC using SAP PCO and OPC as middleware.
It is working for all tags in the datablock except for 2.
This is a screenshot of both tags in the OPC Quick client (I am using Kepware OPC server).
I can read and write the tags from here.
I have created a small test. In the MII workbench I created a PCO Query.
Next I dragged the two tags from the tag browser on the left, to the right.
For both tags I filled in a value.
When I execute the query I get following error messages.
Any other tags work fine.
Thank you for your time.
Hi Philippe,
Can your provide the following:
Regards, Steve
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Hi Philippe,
I tested a similar tag name in Kepware with the Simulator device as I do not have a Siemens hardware connection at present. I was able to read and write DWord tags without issues on these versions:
Kepware V5.15.585.0
MII 14.0 SP5 Patch 15
PCo 2.305.2141.1051 (Patch 3)
Additional question: What is the Agent Instance Tag Query Cache Mode set for?
Regards, Steve
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