Siemens v1.0 Servisní příručka stáhnout pdf (Strana 95)

Extended example

3.2 Expanding the program

STEP 7 Basic V10.5

Getting Started, 12/2009, A5E02651459-01

3.2.2 Programming the conditions for starting the conveyor

3.2.2.1 Querying the status of the machine

Introduction

The following steps show you how to program the status of the machine as condition for

starting the conveyor. The first condition is that the conveyor may only be set into motion

when the machine is switched on. To implement this condition use a Normally open contact

(Page 37), which you interconnect with the tag "ON".

Requirements

The pushbutton switch from the first part of the project has already been programmed in the

first network of the organization block "Main [OB1]".

Procedure

To define the status of the machine as condition for starting the conveyor, follow these steps:

1. Open the organization block "Main [OB1]" in the program editor.

2. Insert a normally open contact into Network 2.

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Siemens v1.0 Servisní příručka Strana 95