Error Communication To M340 device via OFS

Hello Citect SCADA Community, 

I have a problem when configuring the communication between my SCADA project and my PLC M340 via OFS OPC, I did all the steps and I can read and write from OFS to M340, but when arriving at I/O Device configuration I get this error "CiOPCTagBrowse", 

Update: the OPC server is running but I still have the same problem !!

Please help, 

Regards.

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