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MGE PMM; How to connect 4-Wire Modbus to NMC interface board

Published date: 16 August 2019

Issue:
4-Wiring to NMC interface board


Product line:
PMM 400 / PMM 500


Environment:
PMM 400 / PMM 500


Cause:
Customer wants to connect to the NMC interface board instead of Modbus RS45 connector on the outside of the communication box.  The installation/operation manual does not give details on how to connect 4-wire to the NMC interface board.


Resolution:

See wiring diagram below.


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