Redundant Communication Between Schneider QUANTUN PLC and M580 PLC
This paper mainly introduces a communication incompatibility problem caused by partial upgrade of the control system in a blast furnace control system upgrade and retrofitting project,and provides a solution to resolve the problem by using TCSEGDB23F24FA network communication and agent components to realize redundant communication composed of Modbus TCP/IP and Modbus Plus communication.It also introduces the issues of heartbeat detection and communication test methods in the use of redundant communication.After the new control system was put into operation,the redundant communication ran smoothly,and the automatic switching function was used normally.
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