| 摘要 |
PURPOSE:To obtain a remote control system where a plant is safely operated by adopting the double action system consisting of two kinds of operators, namely, an operation contents selecting operator and an operation command operator to surely prevent erroneous control at the time of occurrence of abnormality in the control system. CONSTITUTION:CRT display devices are used as a display device 8a for operation and a display device 8b for plant monitor. When an operator touches a switch pattern on the screen with his finger or the like, a touch panel 10 detects this position and sends it to a process computer 7 as coordinate data 11 on an X-Y matrix preliminarily assigned on the screen. The computer 7 collates data 11 with data for picture display on the device 8a and multiplexes and transmits control command data 12 to a transmission terminal equipment 4 through a transmission controller 5. The equipment 4 converts the control command to parallel information and outputs it to a control logic part 3 and generates the switching condition of each valve, the start/stop condition of a pump, etc., and sends them to a process input/output device 1, thus performing the remote control of the plant.
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