Applications; Parallel Operation Of Communication Interfaces For Cu320 - Siemens SINAMICS S120 Function Manual

Applications

11.1

Parallel operation of communication interfaces for CU320

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 CU320. This was either
the
● onboard interface (PROFIBUS DP) or the
● additional option interface/COMM board (PROFINET, CAN,...).
The onboard interface was disabled when the COMM board was plugged in.
The parameterizable function (p8839) permits the parallel use of the onboard interface
(PROFIBUS DP) and the COMM board (e.g. PROFINET) 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 (one for logic % coordination and one for technology).
● 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 communixation interfaces (onboard, COMM board) are firmly assigned to one of
these cyclic interfaces (IF1, IF2), depending on their type (PROFIBUS DP, PROFINET,
CAN, ...). The respective other interface is disabled (except CAN).
For the parallel operation of the communication interfaces, this formerly fixed assignment to
the cyclic interfaces can be determined as desired by user parameterization.
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
actual values/measured values of the drive.
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