User manual

Rockwell Automation Publication 1756-UM001O-EN-P - October 2014 155
Develop Applications Chapter 10
Parameters and Local Tags
With a Logix5000 controller, you use a tag (alphanumeric name) to address data
(variables). In Logix5000 controllers, there is no fixed, numeric format. The tag
name identifies the data and lets you do the following:
• Organize your data to mirror your machinery.
• Document your application as you develop it.
This example shows data tags that are created within the scope of the Main
Program of the controller.
Figure 37 - Tags Example
There are several guidelines for creating and configuring parameters and local
tags for optimal task and program execution. For more information, see the
Logix5000 Controllers and I/O Tag Data Programming Manual, publication
1756-PM004
.
Controller Organizer —Main Program Parameters and Local Tags
Program Tags Window—Main Program Parameters and Local Tags
Digital I/O Device
Analog I/O Device
Integer Value
Storage Bit
Counter
Timer