while installing OPCDA interface and running the interface i got a message item id is not syntactically valid
This error mainly means that the Item ID in the opc server did not match the Instrument Tag in the PI server. You can verify the Item ID using PI OPC client tool which is installed on the PI OPC interface node.
I hope this is helpful!
Thanks for your replay
i have another issue when i am trying to connect to OPC server through PI OPC client it connected and i can add a group but loading item takes long time and when it comes there no value do you have any replay for that?
I think that this is related to the configuration of your opc server.
Try using the vendor opc client and see if you can get data.
Please verify that.
Thank you very much
I tried with matrikon OPC explorer and it works fine with me.
Even If Matrikon OPC Explorer works fine, you may still want to verify the instrument tag or ItemID. So make a note of the problematic ItemID, Use the PI OPC Client tool and Instead of browsing through the OPC server, paste the ItemID into 'Tag Name' and 'Item ID' fields and click 'Add'. If the tag is available on the OPC server, it will be added into the 'Added Tags' window successfully. Click 'Ok' to bring the itemID into the OPC Client tool and hit 'refresh' or 'poll' to see what value and timestamp is returned from the OPC server. Attaching a screenshot for reference:
If you were able to successfully poll for current values from the OPC server, we can further investigate this by looking at the interface configuration, log files with debugging enabled
Close the OPC client if it is open before starting the PI OPC interface. I have observed a few times that the data fails to collect when you have OPC client application open on your interface node.
Also, if you want to use PI OPC Client Tool to browse the OPC Server for OPC Items, you can tick "Manual" checkbox when searching through the OPC Items. This option doesn't load the whole structure upon browsing, it loads only what it needs, therefore it should take much less time to load.
The "Manual" checkbox can be found on the screenshot provided by Ramanathan.
If you aren't familiar with setting up an OCP server, you may find these resources helpful: PI OPC Interface - YouTube and KB00772.
Do you have message logs from the OPC interface? Any errors would be helpful.
Closing the OPC client if it is open before starting the PI OPC interface would be applicable if your OPC Server doesn't accept multiple concurrent connections.
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