Status Information - Beckhoff Fieldbus Nodes
Each Fieldbus module contains state information which can be linked in TwinCAT to other tasks (e.g. PLC task) for supervision. These state information are identical at all fieldbus participants for the most part. (see the following CouplerState, MissedCnt) and are therefore described below for all Beckhoff Bus Couplers, Bus Terminal Controllers and Fieldbus Boxes in common. An exception is the specific BoxState, to be found in the corresponding description of the device (e.g. BC9000 under -> "TwinCAT System Manager - Reference").
Diagnosis Inputs
Variable | Value | Description |
|---|---|---|
CouplerState | 0x0000 | no error condition |
0x0001 | K-Bus error (see additional information in the corresponding Hardware description) | |
0x0002 | Configuration error (e.g. wrong number of configured Bus Terminals, see additional information at the corresponding Hardware description) | |
MissedCnt | numeric | Is incremented in every I/O cycle without new (actual) input information |