JSR, SBR, and RET instruction examples

Syntax examples and migration notes for JSR, SBR, and RET instructions, including parameter handling.

Routine parameter style examples

Routine with intermixed input and output parameters
The order of input and output parameters must match the routine declaration.
routine ld myRoutine(input dint in1, output dint out1, input dint in2, output dint out2, output dint out3) {
}
JSR call to the above routine:
jsr (myRoutine, #{in1, in2}, #{out1, out2, out3})
Routine with no input parameters
If there are no input or output parameters, you must still specify the unbounded array.
routine ld myRoutine(output dint out1, output dint out2, output dint out3) {
}
JSR call to the above routine:
jsr (myRoutine, #{}, #{out1, out2, out3})
Routine with no parameters
You must specify the unbounded array. This allows all arguments to be distinguished.
routine ld myRoutine() {
}
JSR call to the above routine:
jsr (myRoutine, #{}, #{})

Migration from legacy projects

Migration from Logix Designer projects uses the legacy style.
JSR
  • RLL form: 
    JSR jsr0(subroutineName, #{ input0, input1, ... }, #{ output0, output1, ... });
SBR
If SBR exists in the migrated project:
SBR(in1, in2, int3);
RET
If RET exists in the migrated project:
RET(out1, out2, out3);
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