LED State Displays¶
The PROFIBUS state is shown by state LEDs.
Position and function of LEDs.
| LED | Color | Status | Description |
|---|---|---|---|
| PWR | green | ON (light) | Power supply available. |
| OFF (dark) | Power supply not available or defective hardware. | ||
| RDY | yellow | ON | Boot procedure |
| Blinking | Boot failure | ||
| OFF | — | ||
| RUN | green | ON | Communication Module is operational |
| Blinking | — | ||
| OFF | Communication Module is not operational | ||
| STA | green | ON | Communication to all slaves is established |
| Flashes cyclic | — | ||
| Flashes non-cyclic | No configuration or stack error | ||
| OFF | No communication | ||
| ERR | red | Blinking | No data exchange to the master module or the cable is disconnected |
| OFF | No error | ||
| STA and ERR | green red |
Blinking (synchronously) | Transfers of firmware file during firmware update of the Communication Module. |
green red |
Blinking (alternately) | Firmware file is written to the internal flash by the Communication Module. Do not power off the PLC. | |
yellow yellow |
Blinking (synchronously) | No production data available, no bus communication possible. |