LED Status Display¶
The LEDs are located at the front of module. There are 2 different groups:
- The 5 system LEDs (PWR, CN-RUN, CN-ERR, S-ERR and I/O-Bus) show the operation status of the module and display possible errors.
- The 29 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.
| 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 | — | — | — | |
| CN-RUN | green | — | Device configured, CANopen® Bus in OPERATIONAL state and cyclic data exchange running | Flashing: CANopen® Bus in PRE-OPERATIONAL state and slave is being configured Single flash: CANopen® Bus in STOPPED state. Flickering: Auto-detect is active |
| CN-ERR | red | No system error | CANopen® Bus is OFF | Flashing: Configuration error Single flash: Error counter overflow due to too many error frames Double flash: A Node-Guard or a Heartbeat event occurred Flickering: Auto-detect is active |
| S-ERR | red | No error | Internal error | – |
| I/O-Bus | green | No expansion modules connected or communication error | Expansion modules connected and operational | — |
| LED | Color | OFF | ON | Flashing |
|---|---|---|---|---|
| DC0 to DC7 | yellow | Input/Output is OFF | Input/Output is ON | – |
| DI8 to DI15 | yellow | Input is OFF | Input is ON (the input voltage is even displayed if the supply voltage is OFF) | – |
| DO8 to DO15 | 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 |