two general categories of memory

DATA FILES

User program

house keeping memory

Program files

Program Files are broken down in the following sections:

System Functions

Reserved

User Program (Main)

Sub-routines:

program files are broke into

Output (File 0)

Input

Status

Bit/Binary

Timer

Counter

Control (File 6)

Integer

Average scan time ranges

I/O SCAN

Allen-Bradley scan

Modicon scan

Programming languages