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Question:

Mitsubishi Q series relay L and M difference

Mitsubishi Q series relay L and M difference

Answer:

Mitsubishi Q series PLC relay L and M difference is that M is the auxiliary relay, L is a latch function with the relay. The auxiliary relay (M) corresponds to the intermediate relay in the relay-contact control system, which is used to store the intermediate state or other control information. The external load can not be driven directly, and the output relay coil can only be driven inside the program. The latch relay (L) is an auxiliary relay held by the backup battery. In addition to the general function of the auxiliary relay (M), the latch relay can save the current operation result when the PLC power is switched from OFF to ON or when a QCPU reset occurs.
May 9, 2017
L The latch relay must be reset to clear the memory M is different
May 9, 2017
I generally understand that L is a live hold of M, want to reset L, must be reset by instruction (eg RST).
May 9, 2017

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