Why can the PLC soft relay contacts countless times?
Input and output points, as an intermediate variable, can also be used indefinitely.
Belong to the software virtual, of course, can be used countless times
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.
