SIMATIC WinCC Open Architecture Forum

Dear All,

I am not able to select items from the OPC Server and I am getting a warning while browsing items from the server, Please check the attached image for more information.

Clint is connected to the OPC Server and status is Good, the OPC server is SIEMENS TP1200 Comfort HMI Panel and I am having 800 tags in it.

Hallo,

it seems that the server is limited in the number of items possible in a read request.

You can reduce the number of items by setting the config entry maxItemsInRequest (default 1000)
in section [opcua]

Try e.g.
maxItemsInRequest = 100

and check if the error still appears

best regards

Andreas

Dear Andreas Lugbauer,

I have checked with maxItemsInRequest = 100 but still, I am facing the same error.

Hallo,

have you also tried lower values than 100 ? Maybe 100 is still to high.
The limit should be in the server documentation

best regards

Andreas