LED Status Display
The LEDs are located at the front of module. There are 2 different groups:
- The 5 system LEDs (PWR, STA1-DP, STA2-DP, S-ERR and I/O-Bus) show the operation status of the module and display possible errors.
- The 27 process LEDs (UP, UP3, inputs, outputs, CH-ERR1 to CH-ERR3) show the process supply voltage and the statuses of the inputs and outputs and display possible errors.
Status of the 5 System-LEDs:
| LED |
Color |
OFF |
ON |
Flashing |
|---|
| PWR/RUN |
green |
Process supply voltage missing |
Internal supply voltage OK, module ready for communication with IO Controller |
Start-up / preparing communication |
| yellow |
— |
— |
— |
| STA1-DP |
green |
— |
PROFIBUSâ running |
Invalid device parameters |
| STA2-DP |
red |
No error |
Bus timeout |
No communication to Master |
| S-ERR |
red |
No error |
Internal error |
– |
| I/O-Bus |
green |
No expansion modules connected or communication error |
Expansion modules connected and operational |
— |
Status of the 27 process LEDs:
| LED |
Color |
OFF |
ON |
Flashing |
|---|
| AI0 to AI3 |
yellow |
Input is OFF |
Input is ON (brightness depends on the value of the analog signal) |
– |
| AO0 to AO1 |
yellow |
Output is OFF |
Output is ON (brightness depends on the value of the analog signal) |
– |
| DI0 to DI7 |
yellow |
Input is OFF |
Input is ON (the input voltage is even displayed if the supply voltage is OFF) |
– |
| DO0 toDO7 |
yellow |
Output is OFF |
Output is ON |
– |
| UP |
green |
Process supply voltage missing |
Process supply voltage OK and initialization finished |
– |
| UP3 |
green |
Process supply voltage missing |
Process supply voltage OK |
– |
| CH-ERR1 to CH-ERR3 |
red |
No error or process supply voltage missing |
Internal error |
Error on one channel of the corresponding group |
