Diagnostic LEDs

PLC

on - PLC running, flashing - cycle time exceeded, off - cycle time permanently exceeded or PLC stopped

TC/DC

on - TwinCAT configuration active, off - Default configuration active, flashing TwinCAT configuration faulty

LINK/ACT (RJ45)

on - LINK available, flashing - LINK available and communication

COM

Communication with controller available

ERROR

flashing - DHCP or BootP active. Waiting for an IP address. short flashing - the source code of the PLC program is loaded and is being checked. No boot project can be created during this check time.

Power LED Vs

on - internal power supply 5 V_DC okay (for hardware version 3 and 4 only visible with unplugged connector X1)

Power LED Vp

on - 24 V_DC power supply for external devices okay

K-bus RUN

on or flashing - K-bus running

K-bus ERR

flashing (see error code)

-

flashing continuously

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 (by switching the BC9191 off and then on again)

1 

0

EEPROM checksum error

Enter factory 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 BC9191

2 

- 

reserve

- 

3 

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 

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 KL9010 bus end terminal is connected

5 

n

K-bus error in register communication with Bus Terminal n

Exchange the nth Bus Terminal

6 

0

Error at initialization

Exchange Bus Coupler

1

Internal data error

Perform a hardware reset on the BC9191 (switch off and on again)

2

DIP switch changed after a software reset

Perform a hardware reset on the BC9191 (switch off and on again)

3

IP address already assigned

Check whether the IP address already exists in the network.

7 

0

Note: cycle time was exceeded

Warning: the set cycle time was exceeded. This note (flashing of the LED)
can only be reset by rebooting the BC9191.
Short-term remedy: increase cycle time

9 

0

Checksum error in Flash program

Transmit program to the BC again

1

Incorrect or faulty library implemented

Remove the faulty library 

10 

n

Bus Terminal n is not consistent with the configuration that existed when the boot project was created

Check the nth Bus Terminal. The boot project must be deleted if the insertion of an nth Bus Terminal is intentional.

14 

n

nth Bus Terminal has the wrong format

Start the BC9191 again, and if the error occurs again then exchange the Bus Terminal.

15 

n

Number of Bus Terminals is no longer correct

Start the BC9191 again. If the error occurs again, restore the manufacturers setting using the KS2000 configuration software

16 

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