Siemens Simatic S7-400

Networking
5-17
Automation System S7-400 Hardware and Installation
A5E00850741-01
Example
The figure below shows a possible configuration of an MPI network. This example
clarifies 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
345 6
OP
PG*
OP
OP
 Programming device connected via spur line for maintenance
{ Terminating resistor switched on
0 ... x MPI addresses of nodes
Programming
device*
Figure 5-10 Configuration of an MPI network