Allen Bradley SLC 500 program files are organized into four categories: System Functions (file 0), Reserved (file 1), User Program (file 2), and Subroutine Programs (file 3-255). System Functions contain system information and configuration details. Reserved files are reserved for the processor. User Program files contain the main ladder logic instructions. Subroutine Programs are additional files created by users that are called by the main program file using subroutine instructions.
How are the Allen Bradley SLC 500 program files organizedSolutio.pdf
1. How are the Allen Bradley SLC 500 program files organized
Solution
Allen Bradley SLC 500 program files include System Functions, Reserved, User Program and
Subroutine Programs.
System Functions are of file 0, Reserved are of file 1, User Program are of file 2 and Subroutine
Programs are of file 3-255.
System Functions file contains various system related information and user programmed
information. User programmed information are processor type, I/O configuration, processor file
name and password.
Reserved file is reserved by the processor and user cannot access these files.
User program files contain user programmed instructions. These instructions define how the
controller should operate.
Subroutine programs are created by users and are activated based on subroutine instructions
which are in the main ladder program file.