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What is the difference between Modbus, Modbus Plus, and ModbusTCP/IP?
Article Number: 127 | Rating: 4/5 from 5 votes | Last Updated: Fri, Jan 18, 2008 at 12:00 AM

Modbus is a serial master/slave protocol. Modbus can run over any serial type media (copper, fiber, wireless, modem, etc..)

Modbus Plus is a peer-to-peer protocol which runs at 1 mbs. The Modbus Plus protocol specifies the software layer as well as the hardware layer. Proprietary cabling and terminators must be used with a Modbus Plus network.

ModbusTCP/IP is an EtherNet based protocol. ProSoft Technology's ModbusTCP/IP products act in a master/slave capability.
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    Posted by: Technical Support - Tue, Nov 28, 2006 at 11:02 AM This article has been viewed 54113 times.
    Filed Under: Protocols
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