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1. Use a stub cable to connect the commissioning and maintenance PG to the
other subnet nodes. The bus connector of these nodes must be equipped with a
PG socket.
The figure below shows the interconnection of two networked S7-300 and a PG.
Figure 9-3 Connecting a PG to a subnet
Stub cable used to create connection between PG and CPU
Inserted terminating resistor of bus connector
PROFIBUS bus cable used to network the two CPUs
9-8
PG
1
3
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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
PS
CPU
2
SF
S F
SIEMENS
S IE ME N S
BUS F
BUSF
DC5V
DC5V
FRCE
FR CE
RUN
R UN
S T OP
STOP
PS
CPU
2
SM
SM
A5E00105492-03
- Quick Links:
- Installation Manual
- S7-300 Modules
- Wiring
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