USER MANUAL APS 6.0

Preface
Advanced Programming Software User Manual
6–2
Creating Ladder Program Files
Once you have created a processor file (refer to chapter 5) and placed it in the
appropriate directory, you can name the program file and create subroutine files as
needed.
Program Files for the MicroLogix 1000 Controllers
The program files for the micro controllers are allocated as shown in the table
below.
File Number Purpose
0,1 System use
2 Main ladder
3 User Fault interrupt
4 HSC interrupt or User subroutine
5 STI interrupt or User subroutine
6-15 User subroutines
You can use files 4 and 5 for user subroutines; however, if your MicroLogix 1000
program contains a HSC interrupt and/or an STI, the controller uses files 4 and 5,
respectively, to service the interrupt.
Note If
you enter a user subr outine into file 4 or 5 and later use the HSC or STI interrupt
in your pr ogram, these files will be executed when the interrupt occurs. If you think
you may need one of these r
outines in your pr ogram, we r ecommend that you start
your user subr outines at file 6.