Connecting A Pg To A Subnet - Siemens S7-300 Installation Manual

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1. For commissioning or service, connect the programming device (PG) to a
subnet node by means of a stub cable. The bus connector of this node must be
equipped with a PG socket.
2. You must energize the terminating resistor for the bus cable connectors going
into the CPU.
3. You use a PROFIBUS bus cable to network the CPUs.
Figure 9-5 Connecting a PG to a subnet

Stub cable used to create connection between PG and CPU

Energized terminating resistor of the bus cable connector

PROFIBUS bus cable used to network both CPUs
9-10
PG
1
3
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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
PS CPU
2
SF S F
SIEMENS S IE ME N S
BUSF BUS F
DC5V DC5V
FRCE FR CE
RUN R UN
S T OP STOP
PS CPU
2
SM
SM
A5E00203919-01