Mitsubishi MELSEC System Q User Manual

Procedure to switch a PLC CPU from “STOP“ to “RUN“ after the program or parameters have
been changed during “STOP“:
햲
Switch the RESET/L.CLR switch to the “RESET“ position.
햳
Switch the RUN/STOP switch from “STOP“ to “RUN“.
However, when you want to set the CPU to “RUN“ without clearing the device information:
햲
Switch the RUN/STOP switch from “STOP“ to “RUN
햳
Switch the RUN/STOP switch back to “STOP“
햴
Switch the RUN/STOP switch to “RUN“.
–
ERR. and USER LED
– BAT and BOOT LED
3–10 MITSUBISHI ELECTRIC
The CPU Modules The MELSEC System Q
ON: After the detection of an error during self-diag-
nostics.This error will not stop operation.
OFF: Normal operation of the CPU
Flicker: An error that stops the operation has been
detected during self-diagnostic.
ON: An error has been detected by the CHK instruc-
tion or an annunciator (F) has been switched ON.
OFF: Normal operation of the CPU
Flicker: Execution of latch clear
ON: Voltage of either the battery for the CPU or the
memory card is too low.
OFF: Voltage is normal
ON: Start of boot operation
OFF: Boot operation is not being performed

Mitsubishi MELSEC System Q Specifications

General

Brand	Mitsubishi
Model	MELSEC System Q
Category	Controller
Language	English