ACS550 and PM9C connection via Modbus RTU problem
We have a project and we should read some parameters from ACS550 drive and Schneider PM9C powermeter.
We can read data separately. I mean that we run the engine first, controlled remotely, read data and then we stopped. After that we gave positive pulse to enable input of powermeter modbus block in every 5 seconds, it worked correctly. We read what we wanted.
Then we started the engine again, while it was working we started to read data from powermeter but after a few seconds suddenly drive became offline and came right back. But ofcourse motor did not start again until we started again.
I want to ask why? What should we do? It looks like a modbus problem but what?
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