| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiplexing system with a quick response property and high reliability. SOLUTION: This multiplexing control system, which has a common process input/output device distributing process signals detected by a plurality of sensors detecting the same condition quantity of the process to a plurality of digital controllers respectively, and a process input/output device inputting/outputting the process signal to/from a plant are arranged for each process signal. The process input/output device for the process signal is triplexed, duplexed, or simplexed according to the degree of importance, while process signals of the duplexed process input/output device and a simplexed process input/output device are individually controlled by a controller having a master right among the process controllers. COPYRIGHT: (C)2006,JPO&NCIPI
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