Rockwell Automation Logix5000 Logix5000 Controllers Quick Start - Manual (Page 39)

Publication 1756-QS001E-EN-P - October 2009 39
Organize a Project Chapter 2
If you have multiple machines, stations, or processes that use identical logic but different data, create a
program for each machine, station, or process.
• You can re-use both code and tag names in the programs.
• There is no need to manage conflicting tag names between the programs.
1. Right-click MainTask and choose New Program.
2. Type a name for the program and click OK.
Certain tags must be controller scope.
TIP
Names follow these conventions:
• Only letters, numbers, and underscores (_)
• Must start with a letter or an underscore
• ≤ 40 characters
• No consecutive or trailing underscores
• Not case-sensitive
If you want to use a tag Use this scope
In more than one program in the project
Controller Tags
In a Message (MSG) instruction
To produce or consume data
To communicate with a PanelView terminal
In a single program only Program Tags for the program