User manual

Rockwell Automation Publication 1769-UM011I-EN-P - February 2013 103
Develop Applications Chapter 7
Organize 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 itself identifies the data. This lets you:
• organize your data to mirror your machinery.
• document (through tag names) your application as you develop it.
Figure 20 - Tag Organization
When you create a tag, assign these properties to the tag:
• Ta g t ype
• Data type
• Scope
Digital I/O Device
Analog I/O Device
Integer Value
Storage Bit
Counter
Timer