Rockwell Automation Logix5000 Logix5000 Controllers Quick Start - Manual (Page 43)

Publication 1756-QS001E-EN-P - October 2009 43
Organize a Project Chapter 2
4. Do the following if you want the tag to be an array (multiple instances of the data type).
a. Select the data type and click .
b. Specify the array dimensions and click OK.
Define Your Routines
Once your project has the required programs, you have to define and create the routines for each program.
Item Description
A Routine provides the executable code (logic) for a program (similar to a program file in a PLC
or SLC controller).
B Main routine is required each program.
• When the program executes, its main routine automatically executes.
• Use the main routine to control the execution of the other routines in the program.
• To call (execute) another routine (subroutine) within the program, use a Jump to
Subroutine (JSR) instruction.
C Subroutine is any routine other than the main routine or fault routine. To execute a
subroutine, use a Jump to Subroutine (JSR) instruction in another routine, such as the main
routine.
A
B
C