Unit components Section 2-1
36
Status LEDs
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Also, the CJ1W-MCH72 has 8 general-purpose LEDs. The function of the
general-purpose LEDs can be controlled with the DISPLAY system parameter.
The table below lists the configuration for the LEDs and the DISPLAY=n
command where n ranges from 0 to 7.
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LED Color Status Description
RUN Green OFF • Startup test failed, unit not operational
• Fatal error, operation stopped
Flashing Detection of MECHATROLINK-II slaves and assignment
of axes in progress
ON Unit is ready to execute BASIC commands
ERC Red OFF Unit is in normal operation
Flashing
during
startup
Hardware error
Flashing
during
execution
Low battery
ON Error log access error
ERH Red OFF CPU in normal operation
ON Communication error with PLC CPU
WDOG Green OFF Unit does not operate a Servo Driver
ON Unit operates a Servo Driver
BF Red OFF Normal operation
ON MECHATROLINK-II bus fault
LED n=0 n=1 n=2 n=3 n=4 n=5 n=6 n=7
0 IN0 IN8 IN16 IN24 OUT0 OUT8 OUT16 OUT24
1 IN1 IN9 IN17 IN25 OUT1 OUT9 OUT17 OUT25
2 IN2 IN10 IN18 IN26 OUT2 OUT10 OUT18 OUT26
3 IN3 IN11 IN19 IN27 OUT3 OUT11 OUT19 OUT27
4 IN4 IN12 IN20 IN28 OUT4 OUT12 OUT20 OUT28
5 IN5 IN13 IN21 IN29 OUT5 OUT13 OUT21 OUT29
6 IN6 IN14 IN22 IN30 OUT6 OUT14 OUT22 OUT30
7 IN7 IN15 IN23 IN31 OUT7 OUT15 OUT23 OUT31
RUN
ERC
ERH
WDOG
BF
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