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Controller redundancy control method of field control device in automatic control system and device
Controller redundancy control method of field control device in automatic control system and device
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机译:自动控制系统中的现场控制装置的控制器冗余控制方法及装置
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摘要
The present invention relates to a controller redundancy control method of the field control device in the automatic control system and the device.;One field controller in charge of distributed control in automatic control system is composed of I / O devices consisting of several boards and controllers to control these I / O devices. The other controller operates in a standby state, and when a failure occurs, the controller performs active / standby switching to perform redundancy control to ensure continuity of the task being performed.;The present invention uses the two controllers having the same structure as the controller (controller), which plays the most important role in the field control device, to operate the active and standby (emergency standby), respectively, backing up the normal fluctuation data and the active controller. When a failure occurs, the standby controller immediately switches the active / standby state to perform the redundancy control that doubles the reliability by continuously executing the control program instead of the failure controller.
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