Controller time synchronizing method of industrial control system
An industrial control system and time synchronization technology, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problem that the signal reception is greatly affected by the environment, the stability of time synchronization is low, the synchronization accuracy is low, and the stability of GPS signals is affected. problems, to achieve the effect of convenient networking, low cost of use, and avoiding the influence of external factors
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[0019] figure 1 Be the flow chart of the present invention, figure 2 It is a connection schematic diagram of the controller of the present invention, as shown in the figure,
[0020] A controller time synchronization method of an industrial control system provided by the present invention comprises the following steps:
[0021] S1. Each controller in the industrial control system is connected through two signal lines, one of which is a pulse signal line, and the other is a synchronous time information communication line. The pulse signal line is connected to the controller through the GPIO interface, and the synchronous time information communication line is connected to the The communication port of the controller is connected, wherein the synchronous time information communication line is connected to the communication port of the controller through an interface such as RS485, that is to say, the synchronous pulse signal is sent through the pulse signal line, and the synch...
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