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Layout of the example

Power supply

ON/OFF

Clamp for

strain relief

Overview of the layout of the example (without the wiring of the power supply to the SM)

Functionality of the Example

Output A4.0 can only be switched (i.e. the A4.0 diode lights up on the DO), if switches E0.1

and E0.2 are pressed.

Step 1: Installation

Installation sequence: from left to right: PS – CPU – DI – DO.

A bus connector (BV) is shipped with each DI and DO. You can get an idea of the overall con-

figuration in the overview figure.

Figure

S7-300 Programmable Controller, Getting Started, First Steps for Installation and Commissioning

A5E00069340 01 // 04/2000

Switch for setting

Mode selector switch

system voltage

E0.1

E0.2

Power connector

1. Put the rail in position and fasten (screw size: M6) so that

there is at least 40 mm above and below the rail.

If you fasten the rail to a grounded metal plate or a grounded

device support, make sure there is a low-resistance connec-

tion between the rail and the base.

2. Connect the rail to the protective conductor. There is an M6

protective conductor screw on the rail for this purpose.

Minimum cross-section of the cable to the protective conduc-

tor: 10 mm

Rail

A4.0

Programming device

Switches

cable

Installing and Grounding the Rail

Programming

device with

STEP 7 software