One of the four controllers CPU1214 is no longer available from the OPC PC Access.

Access to the other PLC from OPC is present. Access to the this PLC from the PG TIA and HMI panels is present. Settings of this connections (OPC-PLC) remained unchanged (IP & TSAP-s 10.00, 03.01)

TIA discovered that the blocks in the PLC, and the project are not identical. I re-loaded project to the PLC, but connection with OPC was not restored.

Probably somewhere in the PLC has a setting that limits access to a PLC? Could it will be activated?

best regards

Hi wolka,

which version of S7 1200 do you use?  Firmware, MLFB?

Best regards

methos

Methos1111

Hi wolka, which version of S7 1200 do you use?  Firmware, MLFB?

Best regards methos

 6ES7 214-1AG31-0XB0 V3.0