Beckhoff BK1120/BK1250 EtherCAT Coupling Debugging and KL Terminal Parameterization Complete Guide

KS2000 configuration software communicates with ADS

KS2000 is the official Beckhoff software used for parameterizing KL terminals. To communicate with the BK coupler through the ADS channel, the steps are as follows:

Open the BK coupler's "EtherCAT" ->"Advanced Settings" ->"Mailbox" ->"AoE" in TwinCAT, click "Generate NetID" and "Initialize NetID".

Record the generated AmsNetId (e.g. 172.16.8.29.3.10).

In KS2000, select the communication channel as "ADS", enter the AmsNetId, and set the port to 100.

Test the connection, and once successful, you can read and modify the registers of each KL terminal online.

Firmware compatibility and version recognition

The firmware and hardware versions of BK1120/BK1150/BK1250 are identified by the serial number on the side label (e.g. 34 06 08 02:34 week/06 year/firmware 08/hardware 02). The manual provides a detailed version correspondence table, for example, BK1120 supports AoE starting from firmware 08 and more comprehensive features starting from firmware 19 (hardware 20). When replacing the coupler, it is necessary to ensure that the revision number of the new device is ≥ the revision number in the configuration to maintain compatibility.

Common fault cases and solutions

Possible causes and solutions for the fault phenomenon

The coupler cannot enter the OP K-bus terminal without terminating KL9010. Check if the end is connected to KL9010

Partial analog values are abnormal. User scaling is not loaded correctly. Check if the register write operation in the startup list is successful

I/O ERR flashes 3 times. If one terminal is damaged, use the paired method to troubleshoot. Remove the second half of the terminal and test it one by one

After replacing the terminal, parameters were lost and unused startup list was added. Register write entry was added to TwinCAT Startup

AoE communication failed. AmsNetId was not generated or there was an IP error in KS2000. NetId was regenerated and entered correctly in KS2000

When scanning, the ESI file version of 'Unknown Device' does not match. Update the ESI directory of TwinCAT or upload OnlineDescription from the device