BECKHOFF BK3xx0 - Manual (Page 60)

Notes on the Documentation
58 Fieldbus Components
K-Bus Status
The K-Bus status can be read through DPV1. The data is transferred in Intel format (low byte first):
Slot
number
Index Byte Description
Bit 0: Fieldbus errors
Bit 1: K-Bus error
Bit 2: Error on the Bus Terminal
0-1
Bit 3: Coupler error
2-3 In the presence of a coupler error: Error code
K-Bus error = 0: Bit length of the K-Bus 4-5
K-Bus error = 1: K-Bus error code (-> Diagnostic data)
K-Bus error = 0:
Number of terminals
0 90
6-7
K-Bus error = 1:
Bus Terminal number following which the K-Bus error is detected (-> Diagnostic
data)