BECKHOFF BC3150 - Manual (Page 95)

Safety Instructions
Fieldbus Components 93
State of the K-Bus
An internal bus or Bus Terminal error is indicated in the K-Bus state. A more precise fault description can be obtained
via a function block (in preparation). To this end, link the K-Bus state variable with your PLC program.
Error bit Description Error type
0 No error No ERROR.
Bit 0 K-Bus error ERROR
Bit 2 K-Bus is re-triggered NOTE
Read the K-Bus state via ADS
In the default configuration and TwinCAT configuration you can read the K-Bus state about ADSREAD.
Parameter ADSREAD function block Description
NetID local - empty string
Port 1
IndexGroup 16#0006
IndexOffset 16#000C_9000
LEN 1