
APPENDIX 4
APPENDIX 4 MODULAR PROGRAMMING
(PMC=RA3/RB3/RC3 ONLY)
MODULAR PROGRAMMING
(PMC-RA3/RB3/RC3 ONLY)
The PMCRA3/RB3’RC3 has special sub-program functions that allow modular programming.
When the sub-program function is used, a Ladder program, which must have been coded as an
unbroken sequence before, can be coded in units of sub-programs.
The sub-program function enables FAPT LADDER to manage a program by dividing it into two or
more modules (modular programming.)
The modular programming is accomplished by the
module from a program and connect a module to a
modules.
ladder diagram editing function to produce a
program and the compile function to connect
In the later part of this book, the terms “module” and “source program” mean the following:
0 Module
: Logical unit of a program. A module does not always correspond to a sub-
program. A single module can be the first or
or a group of sub-programs.
l Source program
: Physical unit of a program stored on a floppy
second half of the main program
disk or hard disk
1. LADDER DIAGRAM EDITING FUNCTION
(1) Dividing a source program
l The function copies or moves a part of a source program and creates another program, to
which a name is specified.
0 The function produces a module from a program.
Source program
Module
A4-1