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Leds - Siemens CM 1542-1 Operating Instructions Manual

For simatic net s7-1500 - profinet

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LEDs

Figure 2-1
Meaning of the LED displays
The CM 1542-1 has 3 LEDs to display the current operating status and the diagnostics
status and these have the following meanings:
● RUN/STOP (single color green)
● ERROR (single color red)
● MAINT (single color yellow)
The following table shows the meaning of the various combinations of colors of the RUN,
ERROR and MAINT LEDs.
Table 2- 1
CM 1542-1
Operating Instructions, 07/2019, C79000-G8976-C355-04
RUN/STOP
ERROR
MAINT
X1 P1 LINK/ACT
X1 P2 LINK/ACT
LED display of the CM 1542-1 (without front cover)
Meaning of the LEDs
RUN/STOP
ERROR
LED off
LED off
LED lit green
LED lit red
MAINT
No supply voltage on the CM or
supply voltage too low
LED off
LED test during startup
LED lit yellow
2
Meaning
19

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