Box Tab; Profibus Tab; Fig. 34 Profibus Tab - Beckhoff FC3102 Documentation

FC310x as master
3.9

Box tab

3.9.1

Profibus tab

Fig. 34: Profibus tab
Stations No.: Here, the PROFIBUS station address must be set for each slave. For some slaves, the station
address cannot be set in the hardware, but only via the SetSlaveAddress service. In this case, the button
"Set.." should be pressed. This will open a dialog, through which transmission of a SetSlaveAddress
telegram can be triggered.
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 to be set depends on the DP cycle time, and should be larger than the value calculated by the
following formula: Estimated-Cycle-Time * 10
For particularly critical outputs it is possible to set a DP watchdog time down to as little as 2 ms for DP slaves
that support a watchdog base time of 1 ms (namely all Beckhoff slaves with the exception of the BK3000 and
BK3100, and any third-party devices whose GSD file contains the entry "WD_Base_1ms_supp = 1"). The DP
watchdog time should, however, be at least twice as long as the greater of the Cycle time and the
Estimated cycle time (see the master's FC310x [} 40] tab).
Ident No.: Here, the Ident number from the GSD file is displayed.
PrmData: Allows editing of the Profibus-specific parameter data. The values of the current parameter data
are also displayed. The PrmData can usually be set as text (-> PrmData (text)) or for Beckhoff DP slaves
partly via the "Beckhoff" tab
CfgData: The current configuration data (resulting from the attached modules or terminals) as well as their
length is displayed.
58 Version: 3.0 FC3101 and FC3102