Wiring The Bus Connector - Siemens SIMATIC S7-300 Hardware And Installation Manual

Wiring
7.9

Wiring the bus connector

Introduction
You need to network the nodes if you want to create a multiple-node subnet. The
components you require here are listed in the Chapter Configuring, Configuring a
Subnet.Information on how to wire the bus connector can be found in the article
below.
Wiring the bus cable to the bus connector
Bus connector with screw terminals:
1. Strip the bus cable.
Details on stripped lengths are found in the product information included with
the bus connector.
2. Open the bus connector housing.
3. Insert the green and the red wire into the screw-terminal block.
Note that you always have to connect the same wires to the same terminal (e.g.
always wire green to terminal A and red to terminal B).
4. Press the cable sheath into the clamp. Take care that the bare shielding
contacts the shielding contact surface.
5. Screw-tighten the wire terminals.
6. Close the bus connector housing.
Fast Connect bus connector:
1. Strip the bus cable.
Details on stripped lengths are found in the product information included with
the bus connector.
2. Open the bus connector's cable strain relief.
3. Insert the green and red wire into the open contacting covers.
Note that you always have to connect the same wires to the same terminal (e.g.
always wire green to terminal A and red to terminal B).
4. Close the contacting cover.
This presses the wires down into the insulation displacement terminals .
5. Screw-tighten the strain relief. Take care that the bare shielding contacts the
shielding contact surface.
Note
For a CPU 31xC, 312, 314 (6ES7314-1AF10-0AB0) or 315-2 DP (6ES7315-
2AG10-0AB0), you must use a bus connector and 90deg cable entry.
7-16
S7-300 Programmable Controller Hardware and Installation
A5E00105492-02