Connecting The Pg To Several Nodes - Siemens Simatic S7-300 CPU 31xC Series Installation And Operating Instructions Manual

8.4.5.3

Connecting the PG to several nodes

Requirements
The PG must be equipped with an integrated MPI interface or an MPI card in order to
connect it to an MPI.
Connecting the PG to several nodes
1. Use bus connectors to connect a PG which is permanently installed on the MPI subnet to
The figure below shows two networked S7-300s which are interconnected by means of bus
connectors.
PS
The figure illustrates the following
(1)
(2)
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
the other nodes of the MPI subnet.
CPU
2
PROFIBUS bus cable
Connector with enabled terminating resistor
SM
PG
1
SF
SIEMENS
BUSF
DC5V
FRCE
RUN
STOP
PS
8.4 Commissioning the Modules
CPU SM
2
Commissioning
8-15