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Extended example

3.3 Test expanded program with program status

STEP 7 Basic V10.5

120 Getting Started, 12/2009, A5E02651459-01

6. In Network 2, modify the "LS_2" tag to "1".

In Network 2:

The "LS_2" tag is set to the signal state "1". This setting simulates that the bottle was

transported to the heating chamber and that the light barrier "LS2" was activated.

The current flow is rerouted to the input R1 of the "Set/reset flip-flop" instruction. The

conveyor_drive_ON_OFF tag is hereby reset and the conveyor stopped.

In Network 3:

The current flows through the contact of the main rung to the input S of the "Set/reset flip-

flop" instruction. The chamber_ON_OFF tag is hereby set to the signal state "1", and the

heating chamber is switched on.

In Network 5:

As soon as the heating chamber is switched on (Network 3), the LED tag is set to the

signal state "1" and the status light will be activated.

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Siemens v1.0 Wartungshandbuch Seite 120