Interfaces, Networks and Data Communication for the S7-400
5-4
Automation System S7-400 Configuration and Use
A5E0044271 1-02
Simple Access to Multiple Devices
Figure 5-1 shows an example of a ”multi-point” application. Several operator
panels (OPs) are connected to the S7-400 automation systems via the MPI
interface. You can also connect a programming device without having to remove
the operator panel.
* only connected by a spur line for commissioning/maintenance work (with default MPI address)
** retro-connected to the MPI network (with default MPI address)
0 ... x MPI addresses of the stations
Terminal resistor on
S7-400**
S7-400 S7-400
S7-400
S7-400 S7-400
0
11
78910
123456
PG*
OP
OP
PG
OP**
S7-300
Figure 5-1 Example o f a MPI network
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