User manual

Publication 1768-UM001C-EN-P - November 2007
74 Develop Applications
Organizing 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 naming convention lets you:
• organize your data to mirror your machinery.
• document your application as you develop it.
Tag Organization Overview
When you create a tag, assign these properties to the tag:
• Tag type
• Data type
• Scope
Digital I/O Device
Analog I/O Device
Integer Value
Storage Bit
Counter
Timer