Displays¶
| LED | Status | Color | LED = OFF | LED = ON | LED Flashes |
|---|---|---|---|---|---|
| PWR | System voltage | Green | System firmware is not running | System firmware is running | – |
| CS31 A | CS31 communication | Green | No communication at CS31 Bus A | Communication at CS31 Bus A OK | 10 Hz: Not bit lifetime management |
| C. B | CS31 communication | Green | No communication at CS31 Bus B | Communication at CS31 Bus B OK | 10 Hz: Not bit lifetime management |
| S-ERR | Sum Error | Red | – | Internal error detected | 2 Hz: Diagnostic event happened |
| I/O-Bus | Communication via the I/O Bus | Green | No I/O Bus communication | Expansion modules connected | 2 Hz: Error I/O-Bus |
| RUN A | CPU active | Green | CPU A is not primary | CPU A is primary | RUN B LED off: CI590-CS31-HA primary self selection. No primary order from both PLC. PLC A has been selected as primary. RUN B LED on: 2 primary orders. PLC B is primary. |
| R. B | CPU active | Green | CPU B is not primary | CPU B is primary | RUN A LED off: CI590-CS31-HA primary self selection. No primary order from both PLC. PLC B has been selected as primary. RUN A LED on: 2 primary orders. PLC A is primary. |
| SYNC-ERR | Outputs from CPU A and CPU B | Red | – | Configuration conflict detected | 10 Hz: Not parameterized 2 Hz: Switch-over has occured |
| C0 … C15 | Digital inputs/outputs | Yellow | Input/output = OFF | Input/output = ON (the input voltage is even displayed if the supply voltage is OFF) | – |
| UP | Process supply voltage and initialization | Green | Process voltage is missing | Process voltage OK and initialization completed |
Module was not initialized correctly |
| CH-ERR3 | Red | No error | Severe error within the corresponding group | Error on one channel of the corresponding group (e.g. short-circuit at an output) | |
| CH-ERR4 | Red | No error | Severe error within the corresponding group | Error on one channel of the corresponding group (e.g. short-circuit at an output) | |
| CH-ERR *) | Module error | Red | No error or process voltage is missing | Internal error | – |
| *) All LEDs CH-ERR2 to CH-ERR4 light up together | |||||