| DO0 to DO15 |
Digital output |
Yellow |
Output is OFF |
Output is ON (the input voltage is even displayed if the supply voltage is OFF) |
– |
| DC16 to DC23 |
Digital input/output |
Yellow |
Input/output is OFF |
Input/output is ON (the input voltage is even displayed if the supply voltage is OFF) |
– |
| AI0 to AI3 |
Analog input |
Yellow |
Input is OFF |
Input is ON (brightness depends on the value of the analog signal) |
– |
| AO0 to AO1 |
Analog output |
Yellow |
Output is OFF |
Output is ON (brightness depends on the value of the analog signal) |
– |
| UP |
Process supply voltage 24 VDC via terminal |
Green |
Process supply voltage is missing |
Process supply voltage OK |
– |
| CH-ERR1 |
Channel error, error messages in groups (digital inputs/outputs combined into the groups 1, 2, 3, 4) |
Red |
No error or process supply voltage is missing |
Severe error within the corresponding group |
Severe error within the corresponding group (e.g. short circuit at an output) |
| CH-ERR2 |
Red |
| CH-ERR3 |
Red |
| CH-ERR4 |
Red |
| CH-ERR *) |
Module error |
Red |
– |
Internal error |
– |
| *) All of the LEDs CH-ERR1, CH-ERR2 to CH-ERR4 light up together |
