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

0

90

0-1

Bit 0: Fieldbus errors

Bit 1: K-bus error

Bit 2: Error on the Bus Terminal

Bit 3: Coupler error

2-3

In the presence of a coupler error: Error code

4-5

K-bus error = 0: Bit length of the K-bus

K-bus error = 1: K-bus error code (-> Diagnostic data)

6-7

K-bus error = 0:
Number of terminals

K-bus error = 1:
Bus Terminal number following which the K-bus error is detected (-> Diagnostic data)