Siemens SIMATIC NET CP 5613 Manual page 33

DP-V1 Master Class 2 (DPC2)
An additional DP master that is not operating cyclically can establish connections
to slaves and send or read slave data using DPC2, for example,to reassign
parameters or for diagnostic purposes.
For the software version in which the DPC2 functions are available for the
CP 5613/CP 5614, refer to the version table in Section of the Installation
Instructions.
DP Base Programming Interface for CP 5613/CP 5614
C79000-G8976-C108-02
Overview of PROFIBUS DP
33