mithun baranwal

Micrologix 1400 to Powerflex 523 on DSI

3 posts in this topic

I am trying to communicate power flex 523 drives to micrologix 1400 directly through DSI using 1763-nc01 cable. I have considered channel 0 in plc as modbus RTU master and trying to connect but not connecting. So am i doing it correctly. Any suggestions?

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Have you set a node number in the drive?  And the other communication parameters shown in the 523's user manual, appendix C ?  The drive only supports the few Modbus functions that read/write holding registers.  Make sure you are calling the supported modbus functions from your ladder logic.  Can you show your ladder logic?

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