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Cabling and Wiring the System

6-14

SIMATIC 545/555/575 System Manual

Installing Series 505 Remote I/O Cables (continued)

Use the following procedure to connect a drop line cable between a CPU or

RBC and the Series 505 terminal block.

1. Prepare a cable as described on page 6-12.

2. Plug the cable D-connector into the I/O connector of the CPU or RBC.

3. Tighten the two cable connector screws to secure the cable D-connector

to the I/O connector of the CPU or RBC.

4. Loosen three terminal screws on the terminal block and install the

cable lug terminals onto the terminal block. See Figure 6-7.

Drop line from CPU or RBC

Figure 6-7 Connecting to a Series 505 Terminal Block

NOTE: Throughout your installation, make connections carefully to prevent

wire mismatches. For example, if you have already connected one line, such

as a trunk line, to the terminal block, when you attach the drop line you

must ensure that the wires of the second set of terminal lugs match with

those of the first set of terminal lugs. That is, if a wire at a bottom terminal

screw is blue, the wire on the screw directly above it must also be blue.

Connecting a

Drop Line

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Siemens SIMATIC TI500 Spezifikationen Seite 179