6
FUNCTIONS
6.18 LED Display
6.18.1 Method to turn off the LED
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6.18 LED Display
The LEDs on the front of the CPU module show the CPU module operation status.
Remark
Refer to the following manual for details of the LED indications.
QSCPU User's Manual (Hardware Design, Maintenance and Inspection)
6.18.1 Method to turn off the LED
The LED that is on can be turned off by the following operation. (Except for the
reset operation.)
: Valid : Invalid
* 1 : Special relay and special register contents
SM50•••When switch from OFF to ON, the error is canceled for the error code stored
in the SD50.
SD50•••The error code for the error to be canceled is stored.
Refer to the following manual for the error codes.
QSCPU User's Manual (Hardware Design/Maintenance and Inspection)
Diagram 6.34 LED on CPU module front
Table6.20 LED turning off method
Method to Turn LED Off
Applicable LED
ERR.
USER
BAT.
BOOT
After the cause of error is resolved, cancel the error by
operating the special relay SM50 and special register
SD50. (Only for the operation continue errors.)
*1
QS001CPU
TEST
USER
BAT.
ALIVE
RUN
ERR.
Summary of Contents for MELSEC QS Series
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