Mitsubishi Electric MELSEC Q Series User Manual page 469

9 TROUBLE SHOOTING
9 - 14
REMARKS
How to turn off the ERR. LED is explained below.
(1) Turning on Error clear request (Y10) during module continue error occurrence
(while the ERR. LED is on) turns off the ERR. LED and turns off X10 to X19 and
X1C. ( )
During module stop error occurrence (while the ERR. LED is flickering),
turning on Error clear request (Y10) does not turn off the ERR. LED.
In this case, power off the programmable controller and then on or reset the
CPU module.
Error clear request (Y10)
Error detection signal
(X10 to X19, X1C) (LED OFF)
Error occurrence
(2) Turning on Error clear request (Y10) also clears the following areas.
 Current error area (address: 140 to 145) of the buffer memory.
 Latest error code displayed in the system monitor of GX Developer
(refer to Section 9.2.2)
ON
OFF
ON
(LED ON)
OFF
Error
MELSEC-Q
OFF
OFF
(LED OFF)
9 - 14