Networking
5-17
AutomationSystem S7-400 Hardwareand Installation
A5E00850741-01
Example
The figure below shows a possible configuration of an MPI network. This exampleclarifies the maximum possible distances in an MPI network.
max. 50m
max. 50m
max.
1000m
RS 485-
repeater
RS 485-
repeater
{
{
{
{
{
{
S7-400 S7-400 S7-400
S7-400 S7-400
Spur line
0
11
7
8910
3456
OP
PG*
OP
OP
Programming device connected via spur line for maintenance
{Terminatingresistor switched on
0 ... x MPIaddresses of nodes
Programming
device*
Figure 5-10Configuration of an MPI network