4. Use the "Options" and "Take into account the following cable configuration" buttons to add 
your bus architecture to the configuration and thereby optimize the DP bus parameters for 
your process.
Configuration of the hardware (AS and I/O)
6.4 Settings for CP 443-5 Ext as PROFIBUS master
Compendium Part A - Configuration Guidelines (V8.2)
108 Configuration Manual, 08/2016, A5E38166869-AA