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Process control system for communication in process control network, and fault detection method for process control system
Process control system for communication in process control network, and fault detection method for process control system
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机译:过程控制网络中用于通信的过程控制系统以及过程控制系统的故障检测方法
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摘要
A process control system is provided having a plurality of I/O devices in communication using a bus. A primary redundant I/O device and a secondary redundant I/O device are coupled to the bus, where the secondary redundant I/O device is programmed to detect a primary redundant I/O device fault. The secondary redundant I/O device, upon detecting the primary redundant I/O device fault, publishes a primary redundant I/O device fault message on the bus. The controller may deactivate the primary redundant I/O device and activate the secondary redundant I/O device responsive to the primary redundant I/O device fault message.
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