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Modbus+ (pronounced, "Modbus Plus") is a proprietary, multi-drop peer-to-peer bus protocol using a token-passing scheme for data transmission at a higher data rate than Modbus serial protocols. Schneider Electric maintains control of the Modbus+ protocol.

Modbus+ uses a proprietary 1 Mbit/second physical layer based upon RS-485, HDLC as the data link layer, and standard Modbus messaging protocol. The higher speed of the protocol makes it a cost-effective choice for certain applications. Hundreds of devices exist for Modbus+, available from a variety of manufacturers.

What Can AB Tech Solution Do for Your Modbus+ Product Development?
  • Develop a fully-compliant product for you
  • Add Modbus+ capability to your existing product
  • Enhance the features and functionality of your product
  • Perform interoperability testing