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- FAQ > Controllers > Programmable Controllers MELSEC > MELSEC-Q Series > Cause of file register reset by latch clear operation in universal model QCPU
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Cause of file register reset by latch clear operation in universal model QCPU
A universal model QCPU is used. File registers are reset by latch clear operation. Why are file registers cleared?
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Answer
If Latch (1) is set in the device setting of PLC parameter, the contents of file registers are cleared by latch clear operation.
Set Latch (2) to maintain the contents after the CPU module is turned off or reset operation.
Set Latch (2) to maintain the contents after the CPU module is turned off or reset operation.
- Product Name
- MELSEC-Q Series
- Series
- CPU
