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LogicPro User’s Guide Chapter 8: Ladder Diagrams

Doc.# 28002-00 Rev 3.00 Watlow Anafaze 83

Selector

Use the [Selector] tool to select an element within a Ladder

program. Once selected you can move, edit, delete or assign

Variable names to it.

To use the Selector:

1. Select the [Selector] tool.

Select any element in the program by clicking once on it. This

will cause handles to appear showing that it is selected.

Clicking twice on it causes the Variables dialog box to

appear.

Figure 8.1 illustrates an element without handles.

Figure 8.1 Element without Handles

Figure 8.2 shows a selected element with handles.

Figure 8.2 Selected Element with Handles

Normally Open Contact

The [No Contact] tool enables you to insert normally open

contacts into the program window.

During a single evaluation of the Ladder diagram, if the

Variable associated with this contact is True, then the contact

will close. Thus allowing power to pass to the next element on

the rung. If the associated Variable is False, the contact

remains in the Open state.

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Watlow LogicPro Manual de usuario Pagina 99