Error handling and diagnosis
BC5250
79
Version: 2.0.0
7.2
Diagnostic LEDs
The Bus Terminal Controller has LEDs that indicate the status. The row of LEDs on the left describes the
status of the fieldbus and of the PLC. The row of LEDs on the right indicates the supply voltage and the K-
Bus state.
Fig. 74: LEDs
POWER LEDs for diagnostics of power supply
LED (Power LEDs)
Meaning
LED Us
LED off: Bus Terminal Controller has no 24 V
DC
voltage
LED Up
LED off: No power supply 24 V
DC
connected at the power contacts
LEDs for K-Bus diagnostics
LED (Power LEDs)
Meaning
LED RUN
LED off: no K-bus update
LED on, flashes: K-bus running
LED ERR
LED off: No error
LED flashes: see K-Bus error code