User Documentation

22
Colour
Status
Meaning
Yellow
Off (continuous)
No activity
Yellow
Flashes
PROFINET activity
5.1.3 LEDs U
S1
and U
S2
These two LEDs are controlled by the hardware as follows.
Colour
Status
Meaning
Green
On
Current input U
S1
(L1) or U
S2
(L2) is supplied with current.
Off
Current input U
S1
(L1) or U
S2
(L2) is not supplied with current, or the voltage
is below 18 V.
5.1.4 SF LED
This LED indicates a system failure or fault.
Colour
Status
Meaning
---
Off
No system error
Red
On
- Exception error
- Serious internal error (in combination with red BF-LED)
- Diagnosis event present
Red/Green
Flashing alternately
Firmware update in progress
5.1.5 BF LED
This LED indicates a bus failure.
Colour
Status
Meaning
---
Off
No bus failure
Red
On
One or more of the following faults:
- Serious internal fault (in combination with red SF LED)
- No station name assigned
- No IP address assigned
- The expected configuration does not correspond to the configuration
carried out via the configuration tool.