Siemens SIMATIC PCS 7 Configuration Manual page 111

Settings in the "Operating Mode" tab
Set the DP mode to "DPV1" in the "Operating Mode" tab of the CP443-5 properties dialog:
"DPV1" operating mode contains expansions for process automation. comprising acyclic data
exchange in respect of the parameter assignment, operation, visualization, and interrupt
control of intelligent programmable controllers, in parallel with cyclic data transmission.
In addition, DPV1 has three other interrupt types:
● Status interrupt
● Update interrupt
● Manufacturer-specific interrupt
Note
The DPV1 setting lets you connect and operate DP slaves that do not support DPV1.
Compendium Part A - Configuration Guidelines (V8.2)
Configuration Manual, 08/2016, A5E38166869-AA
Configuration of the hardware (AS and I/O)
6.4 Settings for CP 443-5 Ext as PROFIBUS master
111