Modbus

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Modbus

A high-level protocol for industrial networks developed in 1979 by Modicon (now Schneider Automation Inc.). Providing services at layer 7 of the OSI model, it defines a request/response message structure for a client/server environment. Modbus runs over various data links including its own Modbus+ token passing network and serial links such as RS-232 and RS-485.

It is widely used with TCP/IP over Ethernet. Individual device networks connected to Modbus+ or serial links hook into Ethernet via gateways for transport over an IP network or the Internet. Modbus is governed by the Modbus-IDA Organization, a merger of the Modbus Organization and IDA Group in 2003. For more information, visit www.modbus.org.

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fieldbus

industrial control network

The sensor is rated for hazardous environments and has RS-485 Modbus communication capability.

Level sensors & software for inventory control by Plastics Technology

The SEL-551C relay is said to enable easy integration into industrial protection and control schemes with the Modbus RTU protocol.

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For easy software integration, application programs or 3rd party software can use the Sealevel SeaMAX library or industry standard Modbus protocol.

Sealevel Systems introduces new SeaI/O digital I/O solutions by EDP Weekly's IT Monitor

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