MODBUS
Modbus is an open communications protocol, originally published by Modicon in 1979 for use with its programmable logic controllers (PLCs) via serial data links. It has become a de facto standard communication protocol for connecting industrial electronic devices. The standard is simple, robust, openly published, and royalty-free.
The development and update of Modbus protocols is now managed by the Modbus Organization, a trade association composed of independent users and suppliers of Modbus compliant devices. Their stated objective is to drive the adoption of the Modbus communication protocol suite, and its evolution to address architectures for distributed automation systems across multiple market segments.
Modbus has long been the popular communications protocol for energy management systems and many other applications. It is most often used over RS-485 serial links (most often know as Modbus RTU), however an Ethernet implementation, Modbus TCP is available as well. Most Veris energy metering products support Modbus RTU. Some other Veris products support either Modbus RTU (over an RS-485 serial link) or Modbus TCP (over Ethernet).
Related Links
- Modbus Organization: www.modbus.org
Related Modbus Communication Products:
| U013-0012 | Modbus RTU (RS-485) to Modbus TCP (Ethernet) Gateway |
| E8951 | Modbus to BACnet Protocol Converter (also supports Modbus TCP) |