LEDs

After switching on, the Bus Coupler immediately checks the connected configuration. Error-free start-up is signaled by the red LED I/O ERR being extinguished. If the I/O ERR LED blinks, an error in the area of the terminals is indicated. The frequency and number of flashes indicate the error code (see below).

The BK1120 / BK1150 Bus Coupler has a green LED Link/Act In / Link/Act Out at the RJ45 sockets, which indicates the fieldbus status.

The RUN and ERROR LEDs (for BK1120: center top, for BK1150: left row of the LED prism) indicate the state of the EtherCAT state machine.

On the upper right hand side of the BK1120 are two more green LEDs that indicate the supply voltage. The left hand LED indicates the presence of the 24 V supply for the Bus Coupler. The right hand LED indicates the presence of the supply to the power contacts. At the BK1150, the diagnostic LEDs are on the right side of the LED prism, as shown in Fig. BK1120, BK1150 - Diagnostic LEDs at Bus Coupler.

LEDs 1:
BK1120, BK1150 - Diagnostic LEDs at Bus Coupler

The diagnostic LEDs for the BK1250 are arranged as shown in Fig. BK1250 - Diagnostic LEDs at Bus Coupler.

LEDs 2:
Diagnostic LEDs at Bus Coupler BK1250

LEDs for power supply diagnostics

LED

Display

State

Description

Us (POWER SUPPLY)

green

off

-

No operating voltage present at the Bus Coupler

on

-

24 VDC operating voltage present at the Bus Coupler

Up (POWER CONTACTS)

green

off

-

No power supply present at the power contacts

on

-

24 VDC power supply present at the power contacts

Diagnostic LEDs for the EtherCAT State Machine/PLC

LED

Display

State

Description

RUN

green

off

Init

The Bus Coupler is in initialization state

flashing

Pre-Operational

The Bus Coupler is in pre-operational state

single flash

Safe-Operational

The Bus Coupler is in safe-operational state

on

Operational

The Bus Coupler is in operational state

flickers

Bootstrap

Firmware is being loaded.

ERROR

red

off

-

No error

flashing

Err-Operational
No Communication

PLC error / lost frames

LEDs for fieldbus diagnostics

BK1120, BK1150

LED

Display

State

Description

LINK / ACT (X1 IN)

green

off

-

No connection on the incoming EtherCAT segment

on

linked

Preceding EtherCAT device connected

flashing

active

Communication with preceding EtherCAT device

LINK / ACT (X2 OUT)

green

off

-

No connection on the outgoing EtherCAT segment

on

linked

Following EtherCAT device connected

flashing

active

Communication with downstream EtherCAT device

BK1250

LED

Display

State

Description

LINK/ACT

green

off

-

No connection/communication with the E-bus

flashing

linked

Connection/communication with the E-bus established

LEDs for K-bus diagnostics

LED

Display

State

Description

I/O-RUN

green

off

-

K-bus inactive

on

-

K-bus active

LED red; I/O-Error

Error code argument

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

  • Enter factory settings with the KS2000 configuration software
    (Menu "Online -> Coupler -> Services -> Factory Setting")

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 nth bus terminal

14 pulses

n

nth 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