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Unable to integrate power meter PMC-630A with DeltaV on Profibus

We are unable to integrate the PMC-630A power meter to our DeltaV DCS.

We already set the correct Profibus address of the meter as per our configuration in DCS and used the correct GSD file (630A.GSD).

We are also very sure that our wiring is correct as we used another Profibus device on the same wiring and it worked.

We tried contacting the OEM but they are not responding.

Can you suggest any replacement? Below are the input signals to the power meter. The voltage supply to the unit is 120VDC.

Thanks for your response.