Profibus

1

The hardware address set on the slave is entered here. There are slaves, for which the address cannot be set on the hardware, but only via the SetSlaveAddress service.

In this case use the Set button to start a dialog for sending a SetSlaveAdress telegram and setting an address.

2

The current configuration data (resulting from the attached modules or terminals) as well as their length is displayed.

3

Enables editing of Profibus-specific parameter data. The size of the current parameter data is also displayed. The PrmData can usually be set as text (-> PrmData (text)) or for Beckhoff DP slaves partly via the “Beckhoff” tab.

4

Watchdog:
Activates the DP watchdog. If the slave does not receive a DP telegram for the duration of the watchdog time with the watchdog switched on, it will automatically exit the data exchange. The minimum watchdog time depends on the DP cycle time and should be greater than the value calculated based on the following formula: Estimated-Cycle-Time * 10.

For particularly critical outputs a DP watchdog of up to 2 ms can be set can for DP slaves, which support a watchdog base time of 1 ms. The DP watchdog time should be at least twice the maximum of cycle time and estimated cycle time (see: CCAT PBM).

5

With this button, provided TwinCAT has been started, cyclic data exchange with the DP slave can be disabled and re-established immediately (corresponds to an IO reset but only for the one slave).

6

In operating mode DP/MC (equidistant) of the master, slaves can be operated with Sync and Freeze.

7

Here, the Ident number from the GSD file is displayed.