Parallel Operation Of Communication Interfaces - Siemens SINAMICS DCM Operating Instructions Manual

Descriptions of functions

10.6 Parallel operation of communication interfaces

10.6 Parallel operation of communication interfaces
General information
Only one of the two available hardware communication interfaces could be used for the
processing of the cyclic process data (setpoints/actual values) in the factory setting. This is
either the
● onboard interface (PROFIBUS DP) or the
● additional option interface/COMM board (PROFINET).
The onboard interface is disabled when the COMM board (BDE20) is plugged in.
With the setting p8839 ≠ 99, it is possible to use the onboard interface (PROFIBUS DP) and
COMM Board (PROFINET) in parallel in the SINAMICS system.
The following applications can then be implemented:
● PROFIBUS DP for drive control and PROFINET for the acquisition of
● PROFIBUS DP for control and PROFINET for engineering only
● Mixed mode with two masters (the first for logic and coordination and the second for
● Use of redundant communication interfaces
Assignment of communication interfaces to cyclic interfaces
Two cyclic interfaces exist for setpoints and actual values, which differ by their parameter
ranges used (BICO, etc.) and the usable functionalities. These two interfaces are designated
IF1 (cyclic interface 1) and IF2 (cyclic interface 2).
The HW communication interfaces (onboard, COMM board) are firmly assigned to one of
these cyclic interfaces (IF1, IF2), depending on their type (PROFIBUS DP, PROFINET). The
respective other interface is disabled.
For the parallel operation of the communication interfaces, this formerly fixed assignment to
the cyclic interfaces can be determined as desired by user parameterization.
Properties of the cyclic interfaces IF1 and IF2
The following table shows the different features of the two cyclic interfaces:
392
actual values/measured values of the drive.
technology).
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
SINAMICS DCM DC Converter