Setting up an S7-300 with a Technology CPU
4.4 Subnets
4.4.2 Interfaces
MPI/DP interface
You can reconfigure this interface in STEP 7 as a PROFIBUS DP interface.
The MPI (Multi-Point Interface) represents the CPU interface for PG/OP connections, or for
communication on an MPI subnet.
The PROFIBUS DP interface is mainly used to connect distributed I/O. PROFIBUS DP
allows you to create large subnets, for example.
Interfaces
Table 4-3 Possible operating modes of interfaces on the Technology CPU
MPI/DP interface (X1) DP(DRIVE) interface (X3)
• MPI
• DP master
• DP slave
• DP master for DP(DRIVE)
Which devices can you connect to which interface?
Table 4-4 Connectable devices
MPI PROFIBUS DP DP (drive)
• PG/PC
• OP/TD
• S7-300/400 with
MPI interface
• S7-200
(with 19.2 kbaud only)
• PG/PC
• OP/TD
• DP slaves
• DP master
• Actuators/sensors
• S7-300/400 with
PROFIBUS
DP interface
• MICROMASTER 420/430/440 and
COMBIMASTER 411
• SIMODRIVE 611 universal
• SIMODRIVE POSMO CD/SI/CA
• MASTERDRIVES MC/VC
• ET 200M with IM 153-2 (isochronous!)
• ET 200S with IM 151-1
• SINAMICS S120 (optional with TM15
or TM17 high feature for high-speed
cams)
• SIMODRIVE sensor isochronous
• Analog drive interface ADI4
Tip: You will find a list of connectable
devices in STEP 7 under the "SIMATIC
Technology CPU" profile in the hardware
catalog.
S7-300 CPU Data: CPU 315T-2 DP
4-4 Manual, 12/2005, A5E00427933-02
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