Jump to Subroutine

Jump to Subroutine is a fundamental ladder logic element or instruction used to implement control logic in PLC programs. Calls another program file or routine when rung condition is true. This instruction type enables programmers to create specific control behaviors, implement timing functions, or manage data within ladder logic programs. Understanding and properly utilizing Jump to Subroutine is essential for developing effective ladder logic programs that meet application requirements.

The implementation of Jump to Subroutine follows established conventions and best practices for ladder logic programming. Programmers must consider scan time impacts, proper placement within ladder rungs, and interaction with other instructions when using Jump to Subroutine. Common applications include sequential control, state machine implementation, and process interlocking. Effective use of Jump to Subroutine contributes to clear, maintainable ladder logic programs that can be easily understood and modified by maintenance personnel.