Assembly of a CPU 41x–H
5.7 Multi Point Interface MPI/DP (X1)
S7-400H
70 System Manual, 03/2012, A5E00267695-11
5.7 Multi Point Interface MPI/DP (X1)
Connectable devices
You can, for example, connect the following devices to the MPI:
● Programming devices (PG/PC)
● Operating and monitoring devices (OPs and TDs)
● Further SIMATIC S7 controllers
Various compatible devices take the 24 V supply from the interface. This voltage is non-
isolated.
PG/OP–CPU communication
A CPU is capable of handling several online connections to PGs/OPs in parallel. By default,
however, one of these connections is always reserved for a PG, and one for an OP/HMI
device.
CPU–CPU communication
CPUs exchange data by means of S7 communication.
For additional information, refer to the
Programming with STEP 7
manual.
Connectors
Always use bus connectors with an angular cable outlet for PROFIBUS DP or PG cables to
connect devices to the MPI (see
Installation Manual
).
MPI as DP interface
You can also parameterize the MPI for operation as DP interface. To do so, reparameterize
the MPI under STEP 7 in the SIMATIC Manager. You can configure a DP segment with up to
32 slaves.
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