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

Figure 8-6 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.
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
PG
PG cable
= spur line
SF
SIEMENS
BUSF
DC5V
FRCE
RUN
STOP
S7-300
SF
SIEMENS
BUSF
DC5V
FRCE
RUN
STOP
S7-300
Commissioning
8-11