Reaction to PROFIBUS errors

The reaction to a PROFIBUS error (e.g. the plug is pulled out, STOP of the DP master, etc.) can be set. The possible reactions are:

Stopping the K-Bus
Resetting the outputs to 0
Retaining the current output states

Note

In the Cycle is stopped setting, the signal states of the output terminals are identical to those under the Outputs become 0 setting.

The settings for the Reaction to Profibus error function are found in byte 10 of the User_Prm_Data (default settings are printed bold):

Bit no.	Description	is supported by
Bits 0/1	Reaction to Profibus errors 0: Cycle is stopped 1: Outputs become 0 2: Outputs remain the same	IP10xx, IP15xx, IP20xx, IP23xx, IP25xx, IP31xx, IP41xx, IP50xx, IP51xx, IP60xx

In TwinCAT the settings for the Reaction to PROFIBUSerror can be transferred with ADSRead and ADSWrite (ADS: Automation Device Specification). For this purpose they should be activated in the User_Prm_Data.

The settings for the Reaction to PROFIBUSerror function are found in the TwinCAT System Manager on the "PrmData" tab for the corresponding Bus Coupler.