1756-PM003H-EN-E, SFC and ST Programming Languages ...

10-2 Program Control Instructions (JSR, RET, SBR)
Jump to Subroutine (JSR)
Subroutine (SBR)
Return (RET)
The JSR instruction jumps execution to a different routine. The SBR
and RET instructions are optional instructions that exchange data with
the JSR instruction.
JSR Operands:
Relay Ladder
Operand: Type: Format: Description:
Routine ROUTINE name routine to execute (i.e., subroutine)
name
Input
parameter
Return
parameter
BOOL
SINT
INT
DINT
REAL
structure
BOOL
SINT
INT
DINT
REAL
structure
Structured Text
immediate
tag
array tag
tag
array tag
data from this routine that you want to copy
to a tag in the subroutine
• Input parameters are optional.
• Enter multiple input parameters, if
needed.
tag in this routine to which you want to copy
a result of the subroutine
• Return parameters are optional.
• Enter multiple return parameters, if
needed.
JSR(RoutineName,InputCount,
InputPar,ReturnPar);
Operand: Type: Format: Description:
Routine ROUTINE name routine to execute (i.e., subroutine)
name
Input count SINT
INT
DINT
REAL
immediate number of input parameters
Input
parameter
Return
parameter
BOOL
SINT
INT
DINT
REAL
structure
BOOL
SINT
INT
DINT
REAL
structure
immediate
tag
array tag
tag
array tag
data from this routine that you want to copy
to a tag in the subroutine
• Input parameters are optional.
• Enter multiple input parameters, if
needed.
tag in this routine to which you want to copy
a result of the subroutine
• Return parameters are optional.
• Enter multiple return parameters, if
needed.
(JSR operands continued on next page)
Publication 1756-PM003H-EN-E (excerpt from 1756-RM003H-EN-P) - August 2005