Rockwell-automation Logix5000 Controllers I/O and Tag Data Programming Bedienungsanleitung PDF herunterladen (Seite 49)

Organize tags Chapter 2

The following logic was initially programmed by using descriptive tag names, such

as stop and conveyor_on. Later, the tags were converted to aliases for the

corresponding I/O devices.

• stop is an alias for Local:2:I.Data.1 (the stop button on the operator

panel)

• conveyor_on is an alias for Local:0:O.Data.0 The starter contactor for the

conveyor motor)

Display alias information

Follow these steps to show (in your logic) the tag to which an alias points.

1. On the Menu bar, click Tools > Options.

2. In the Workstation Options dialog box, expand Ladder Editor and then

click Display.

3. Select the Show Tag Alias Information check box.

4. Click OK.

Assign an alias

Follow these steps to assign a tag as an alias tag for another tag.

1. On the Controller Organizer, right-click Controller Tags and then click

Edit Tags.

2. In the Tag Editor window, to the right of the tag name, click the Alias For

cell.

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Rockwell-automation Logix5000 Controllers I/O and Tag Data Programming Bedienungsanleitung Seite 49