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Is it possible for the ATS48/ATS22 soft starters to communicate with two or more Modbus Master devices?

Published date: 29 October 2018

Customer wants to connect a remote keypad and a communication network to the ATS22 / ATS48 soft starter.

Product Line:
ATS22/ATS48 soft starters

All models, All serial numbers

Instructions for this type connection can not be found in current literature.

It is not possible to have an ATS22 or ATS48 connected to multiple master devices via Modbus RTU.  The ATS is a Modbus slave and as such will follow commands from a master device over the network.  The remote keypad is a modbus master and their controller on their network is also a modbus master.  It is not possible for a Modbus slave to follow commands from multiple masters simultaneously.  This type of configuration is not possible.

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