Leds Indicating Errors; Clearing Errors - Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual

3.17.1

LEDs indicating errors

When an error occurs, the LEDs on the front of the CPU module turns on/flashes. (
3.17.2

Clearing errors

Continuation errors can be cleared. The High-speed Universal model QCPU and Universal model Process CPU can
clear those errors by types.
A continuation error has
occurred.
BATTERY ERROR
OPERATION ERROR
PRG. TIME OVER
(1) Errors that can be cleared
The following errors can be cleared.
• SP.UNIT DOWN
• FLASH ROM ERROR
• ICM.OPE.ERROR
• SNTP OPE.ERROR
• F*** (Annunciator)
• SINGLE PS.ERROR
• PID ERROR
(2) Clearing method
Errors are cleared in two ways.
• Using a programming tool
• Using the special relay (SM) and special register (SD)
Note 3.11
Universal
Only the High-speed Universal model QCPU and Universal model Process CPU can clear errors using a programming
tool.
202
Continuation
error
Programming tool
Select the error to be cleared. (Check all that apply.)
• AC/DC DOWN
• MEM.ACCESS ERROR
• FILE OPE.ERROR
• OPERATION ERROR
• FUSE BREAK OFF
• UNIT VERIFY ERR.
Note 3.11
Note 3.11
Continuation
error
Eliminate the error cause
and clear the error.
• BATTERY ERROR
• SP.UNIT ERROR
• REMOTE PASS.FAIL
• PRG.TIME OVER
• SINGLE PS.DOWN
• MULTI CPU ERROR
Page 221, Section 3.20)
No continuation
error