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Can I pair an HMI+PLC (HMC) with a Maple Systems PLC (MLC)?
Tags: FAQ Modbus
Absolutely. Maple Systems PLCs (MLC) can communicate with an HMI + PLC (HMC) either with or without I/O modules attached to it.

A potential application would be to have the PLC installed in a remote cabinet, while the HMC is mounted in a convenient location for the operator. With the HMC optional I/O modules, local control switches could be monitored and controlled by the HMC to reduce wiring complexity.

Additionally, only one configuration software is required to program both units pieces. When using the Native Ladder logic editor, a native PLC to HMC driver is available, and tags can be imported from one project to another. In IEC mode, Modbus is used to communicate between the PLC and HMC.
Content Created by David Franzwa