Communications configuring
System- and communication configuring D7-SYS - SIMADYN D 3-137
Edition 12.2003
3.12 MPI coupling
3.12.1 Characteristics and hardware
MPI (Multi Point Interface) is the standard communications protocol for
SIMATIC S7/M7. Data transfer is realized via a multi-master bus with a
maximum of 126 nodes.
For SIMADYN D, MPI is used to connect the CFC for start-up and testing
configured software, and is also used to communicate with WinCC and
SIMATIC OPs.
With the MPI coupling, the communication utilities service (FB-SER) and
S7 communications (FB-S7OS) are used.
The following hardware is required for the MPI coupling:
• Subrack
• CPU
• CS7 module with SS52 communications module (this must also be
configured in HWConfig)
3.12.2 Configuring
The CS7 communications module and the SS52/MPI communications
module must be configured in HWConfig. Its own MPI address must be
specified for SS52/MPI.
Precisely one @CSMPI central coupling block must be configured for
each SS52/MPI. The @CSMPI function block initializes and monitors the
MPI coupling.
Additional information
to configure an MPI coupling, refer to:
• Section "Communications Utility Service"
• Section "Communications with SIMATIC Operator Panels"
• Section "Communications with WinCC (MPI)"
Characteristics
Hardware
HWConfig
Function block
@CSMPI
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