Connecting A Pg To A Subnet - Siemens SIMATIC S7-300 Hardware And Installation Manual

Commissioning
The figure below shows the interconnection of two networked S7-300 and a PG.
Figure 9-6 Connecting a PG to a subnet
MPI addresses for service PGs
If there is no stationary PG, we recommend:
To connect it to an MPI subnet with "unknown" node addresses, set the following
addresses on the service PG:
• MPI address: 0
• Highest MPI address: 126.
Using STEP 7, you then determine the highest MPI address in the MPI subnet and
adapt the highest MPI address in the PG to that of the MPI subnet.
9-12
PG
PG cable
= spur line
S7-300 Programmable Controller Hardware and Installation
SF
SIEMENS
BUSF
DC5V
FRCE
RUN
STOP
S7-300
Terminating resistor
switched on.
SF
SIEMENS
BUSF
DC5V
FRCE
RUN
STOP
S7-300
Terminating resistor
switched on.
A5E00105492-02