Reaction to PROFIBUS Error
A PROFIBUS error (failure of the master, withdrawal of the PROFIBUS plug etc.) is detected after the DP watchdog has elapsed (usually in the region of 100 ms, unless this has been deactivated in the master) or by bus timeout (the baud rate supervision time is set to 10 s).
The reaction at the output data of the coupler can be set in the UserPrmData:
Byte | Bit | Value | Description |
|---|---|---|---|
10 | 0-1 | 00bin | Reaction to PROFIBUS error: K-bus cycle is abandoned (default, digital outputs become 0, complex outputs are set to a planned substitute value) |
01bin | Reaction to PROFIBUS error: K-bus outputs become 0 | ||
10bin | Reaction to PROFIBUS error: K-bus outputs remain unchanged |