
5.COMPILATION AND DECOMPILATION B-63484EN/05
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5 COMPILATION AND DECOMPILATION
This chapter describes how to compile and decompile source
programs, as well as automatic compilation and automatic
decompilation. The chapter also describes how to protect a ladder
program using a password.
• Compilation
Compilation involves converting an edited source program to
object code that can be executed by the PMC. Unless source
programs are compiled, online functions cannot be used and the
source programs cannot be transferred to RAM of the PMC.
Source
program
Object
code
Compilation
Transfer to
• Decompilation
Decompilation involves converting object code to a source
program. Data items uploaded from the PMC, and data items
read from ROM and a memory card become object code. Since
object code can neither be edited nor printed offline, you must
decompile object code.
Decompilation
Object code
Source
program
NOTE
To decompile an object code with a password,
enter the password first.