Connecting A Pg To Multiple S7 Devices - Siemens S7-300 Installation Manual

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1. Use bus connectors to connect a stationary PG in the MPI subnet to the other
nodes of the MPI subnet.
The following figure shows you two S7-300 connected by means of PROFIBUS
bus cables. The bus cable connectors have integrated terminating resistors. These
must be energized on the CPUs for the outgoing bus cable connectors.
Figure 9-4 Connecting a PG to multiple S7 devices

PROFIBUS bus cable

Cable connector with energized terminating resistors
S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
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