Power Supply Terminal Leds In K-Bus Mode; Table 8 K-Bus Err Led, Fault Indication Sequence Through The Led - Beckhoff CX2100-0004 Manual

Error handling and diagnostics
7.2

Power supply terminal LEDs in K-bus mode

The power supply unit checks the connected Bus Terminals for errors. The red LED "K-bus ERR" is off if no
error is present. The red LED "K-bus ERR" flashes if Bus Terminal errors are present.
Display
The frequency and number of the flashes can be used to determine the error code and the error argument.
An error is indicated by the "K-bus ERR" LED in a particular order.
Table 8: K-bus ERR LED, fault indication sequence through the LED.
Order
Fast blinking
First slow sequence
No display
Second slow sequence
Count how often the red LED K-bus ERR flashes, in order to determine the error code and the error
argument. In the error argument the number of pulses shows the position of the last Bus Terminal before the
error. Passive Bus Terminals, such as a power feed terminal, are not included in the count.
40
LED Meaning
Us 24 V Power supply for basic CPU module. The LED
lights green if the power supply is correct.
Up 24V Power supply for terminal bus. The LED lights
green if the power supply is correct.
K-BUS RUN Diagnostic K-bus. The green LED lights up in order
to indicate fault-free operation. "Error-free" means
that the communication with the fieldbus system is
also running.
K-BUS ERR Diagnostic K-bus. The red LED flashes to indicate
an error. The red LED blinks with two different
frequencies.
Meaning
Starting the sequence
Error code
Pause, the LED is off
Error code argument
Version: 1.2 CX2100-0004