LED |
State |
Color |
LED = OFF |
LED = ON |
LED flashes |
|
---|---|---|---|---|---|---|
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PWR |
Process voltage 24 V DC via terminal |
Green |
CPU module voltage or external 24 V DC supply voltage is missing |
3.3 V system voltage (I/O bus) and external 24 V DC supply voltage are present |
--- |
ERR |
Channel or module error |
Red |
No error or process voltage is missing |
Severe error in the module |
Error on 1 or more channels of the module |