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MPI/Profibus-DP
Up to 32 devices (PC, programming device or programmable controller) can
Network
be connected to the MPI/DP interface to form a network segment. The
physical coupling of the MPI/DP interface to the PROFIBUS DP network is
via a floating RS485 interface which is a component of the PG basic module.
Several PROFIBUS DP network segments can be coupled via repeaters. The
complete PROFIBUS DP network can comprise up to 127 stations. The data
transmission rate in the MPI network is 187.5 Kbps. Data transmission rates
from 9.6 Kbps to 1.5 Mbps are possible in the PROFIBUS DP.
Note
You can find information on establishment of a PROFIBUS DP network in
the Manual "Setting up an S7-300", Order No.: 6ES 7030-0AA00-8BA0.
Note
In order to be able to use the MPI/DP interface, the corresponding address
must be entered in the SETUP program in the submenu "PG 740 Hardware
Options" "Configure MPI Address Range".
The MPI/DP interface does not occupy any hardware resources if it is
disabled. The assigned interrupt can be set using the MPI/DP driver.
Programming Device PG 740
C79000-G7076-C742-01
Starting Up the PG 740
3-17
3
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