User guide

Chapter 25
Control Instructions
25–6
Subroutine SBR Input Instruction
SBR
SUBROUTINE
SBR
F1 F2 F3 F4 F5
ZOOM on SBR –|SBR|– 2.3.0.0.1
NAME: SUBROUTINE
EDT_DAT
HHT Ladder Display:
HHT Zoom Display:
Ladder Diagrams and APS Displays:
(online monitor mode)
This instruction serves as a label or identifier of a program file as a regular
subroutine file (SBR label) versus an interrupt subroutine (INT label).
The target subroutine is identified by the file number that you entered in the
JSR instruction.
This instruction has no control bits. It is always evaluated as true. The
instruction must be programmed as the first instruction of the first rung of a
subroutine.
Return from Subroutine RET Output Instruction
(RET)
RET
RETURN
F1 F2 F3 F4 F5
ZOOM on RET –(RET)– 2.3.0.0.2
NAME: RETURN
EDT_DAT
HHT Ladder Display:
HHT Zoom Display:
Ladder Diagrams and APS Displays:
(online monitor mode)
Subroutine (SBR)
Return from Subroutine
(RET)