Mitsubishi Melsec-Q Series User Manual page 314

12.2.13 When the RUN LED is flickering
If the RUN LED flickering, follow the procedure below.
Note1
When the programs or parameters are written into the CPU module during the STOP status and then the RUN/STOP
switch
Note12.8
Although this status does not mean the CPU module error, the CPU module stops the operation. To set the CPU
module to the RUN status, reset the CPU module using the RESET/L.CLR switch
switch
Note12.8
With this setting, the RUN LED turns on.
12.2.14 When the ERR. LED has turned on or is flickering
Refer to the following flowchart when the ERR. LED of the CPU module turns on or flickers at programmable controller
power-on, at operation start or during operation.
Please consult your local Mitsubishi
service center or representative,
explaining a detailed description of
the problem.
Note1
Note12.8 Basic
For the Basic model QCPU, use the RUN/STOP/RESET switch for operation.
12 - 19
is set from STOP to RUN, the RUN LED of the CPU module flickers.
from STOP to RUN position again.
Hardware fault
Figure 12.13 When the ERR. LED is on or flickers
"ERR." LED is on/flickering.
Confirm details of error by GX
Section 12.3
Developer.
( Section 12.3)
Set the RUN/STOP
Note12.8
switch to STOP.
Modify error details.
Section 12.3
( Section 12.3)
Reset by the RESET/L. CLR
Note12.8
switch .
Set the RUN/STOP switch
to RUN.
Can
"ERR." LED
turn off?
YES
Completed
or set the RUN/STOP
Note12.8
Note12.8
NO