Error handling and diagnosis
BC9000 and BC9100 79Version: 4.0.0
Fig.50: BC9100 - LEDs
LEDs for power supply diagnostics
LED Meaning
Left LED off Bus Coupler has no power
Right LED off No power supply 24V
DC
connected at the power contacts
LEDs for fieldbus diagnostics
LED on off
LINK (BK9000/BC9000 only) Physical connection present No physical connection present
ACT (BK9000/BC9000 only) Flashing: Bus traffic present No bus traffic (bus idle)
COM (BK9100/BC9100 only) Flashing: data received at the controller no data are received
ERROR LED flashes slowly if DHCP or BootP is enabled and the
Bus Coupler has not yet been allocated an IP address
LED flashes quickly (5 times, only when switching on): the
Bus Coupler was addressed with ARP. The settings on the
DIP SWITCH are not valid.
LED permanently on (only in RT-Ethernet mode)
Note: task time set too fast
No error
PLC (BC9000/BC9100 only) PLC program is in RUN mode
LED flashes while the boot project is being saved.
PLC program is in stop mode
WDG (BK9000 only) Watchdog is triggered:
- No error
Watchdog expired or not triggered:
- Start communication
- Reset watchdog error
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