Error handling and diagnosis
BK9053, BK910342 Version: 2.3.0
LEDs for K-bus diagnostics
Error code Error code argu-
ment
Description Remedy
Persistent,
continuous flashing
EMC problems • Check power supply for undervoltage or
overvoltage peaks
• Implement EMC measures
• If a K-bus error is present, it can be
localized by a restart of the coupler (by
switching it off and then on again)
1 pulse 0 EEPROM checksum
error
Set manufacturer's settings with the KS2000
configuration software
1 Code buffer overflow Insert fewer Bus Terminals. Too many
entries in the table for the programmed
configuration
2 Unknown data type Software update required for the Bus
Coupler
2 pulses 0 Programmed
configuration has an
incorrect table entry
Check programmed configuration for
correctness
n (n > 0) Table comparison
(Bus Terminal n)
Incorrect table entry
3 pulses 0 K-bus command error • No Bus Terminal inserted
• One of the Bus Terminals is defective;
halve the number of Bus Terminals
attached and check whether the error is
still present with the remaining Bus
Terminals. Repeat until the defective Bus
Terminal is located.
4 pulses 0 K-bus data error,
break behind the Bus
Coupler
Check whether the n+1 Bus Terminal is
correctly connected; replace if necessary.
n Break behind Bus
Terminal n
Check whether the bus end terminal 9010 is
connected.
5 pulses n K-bus error in register
communication with
Bus Terminal n
Exchange the n
th
bus terminal
6 pulses 0 Error at initialization Exchange Bus Coupler
1 Internal data error Perform a hardware reset on the Bus
Coupler (switch off and on again)
4 DIP switch incorrect
for BootP
Set 1-8 to on or off, see BootP
8 Internal data error Perform a hardware reset on the Bus
Coupler (switch off and on again)
16 Error in IP socket Perform a hardware reset on the Bus
Coupler (switch off and on again)
14 pulses n n
th
Bus Terminal has
the wrong format
Start the Bus Coupler again, and if the error
occurs again then exchange the Bus
Terminal
15 pulses n Number of Bus
Terminals is no longer
correct
Start the Bus Coupler again. If the error
occurs again, restore the manufacturers
setting using the KS2000 configuration
software
16 pulses n Length of the K-bus
data is no longer
correct
Start the Bus Coupler again. If the error
occurs again, restore the manufacturers
setting using the KS2000 configuration
software