Table 9 K-Bus Err Led, Fault Description And Troubleshooting - Beckhoff CX2100-0014 Manual

Error handling and diagnostics
Table 9: K-BUS ERR LED, fault description and troubleshooting.
Error code Error code argu-
ment
Persistent,
continuous
flashing
3 pulses 0
4 pulses 0
n
5 pulses n
6 pulses 0
1
8
7 pulses 0
For some error the LED "K-BUS ERR" does not go out, even if the error was rectified. Switch the power
supply for the power supply unit off and back on again to switch off the LED after the error has been rectified.
State variable
In TwinCAT there is a State variable under the Bus Coupler for K-bus diagnostics.
42
Description
EMC problems.
K-bus command error.
K-bus data error, break
behind the power supply
unit.
Break behind Bus
Terminal n
K-bus error in register
communication with Bus
Terminal n.
Error at initialization.
Internal data error.
Internal data error.
Process data lengths of
the set and actual
configurations do not
correspond.
Version: 1.2
Remedy
• 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 power supply
(by switching it off and then on again)
• 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 this procedure until
the faulty Bus Terminal has been found.
Check whether the Bus End Terminal 9010
is connected.
Check whether Bus Terminal n+1 after the
power supply unit is connected correctly;
replace if necessary.
Replace Bus Terminal at location n.
Replace Embedded PC.
Hardware reset of the Embedded PC
(switch off and back on again).
Hardware reset of the Embedded PC
(switch off and back on again).
Check the configuration and the Bus
Terminals for consistency.
CX2100-0014