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Question:

Why can the PLC soft relay contacts countless times?

Why can the PLC soft relay contacts countless times?

Answer:

Because the soft relay in the PLC is a bit memory unit (image register), the state is only 0 and 1, the number of storage units out of the state will not affect the status of the storage unit, so the PLC program can use the storage unit State, that is, soft relay contacts can be used in the PLC program countless times.
May 9, 2017
Belong to the software virtual, of course, can be used countless times
May 9, 2017
Input and output points, as an intermediate variable, can also be used indefinitely.
May 9, 2017

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