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CHAPTER6 FUNCTIONS
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6.6 R
emote Operation
6.6.4 R
emote latch
clear
6.6.4 Remote latch clear
(1) Definition
This function resets the latched device data from GX Developer or an external device when the CPU module is in
the STOP status.
(2) Application
This function is useful in the following cases if used together with the remote RUN/STOP operation.
• When the CPU module is inaccessible
• To clear latched device data in the CPU module in a control panel externally
(3) Executing method
This operation can only be performed by GX Developer or an external device using the MC protocol.
• Select [Online]
[Remote operation] in GX Developer.
• To execute the remote latch clear operation from an external device, use the MC protocol command.
MELSEC-Q/L MELSEC Communication Protocol Reference Manual
To perform the remote latch clear operation, follow the following steps.
1) Change the operating status of the CPU module to STOP by the remote STOP operation.
2) Clear the latched device data in the CPU module by the remote latch clear operation.
3) After remote latch clear processing is completed, perform the remote RUN operation to return the operating
status to RUN.