Omron NJ501-1500

2-61
2 Instruction Descriptions
NJ-series Instructions Reference Manual (W502)
Sequence Control Instructions
2
RETURN
RETURN
The RETURN instruction ends a function or function block and returns processing to the calling instruc-
tion.
None
The RETURN instruction ends a function or function block and returns processing to the calling instruc-
tion.
The following figure shows a programming example. When the RETURN instruction is executed in the
example, the SR instruction that follows it is not executed.
• Observe the following precautions if you use this instruction in a ladder diagram.
• Use this instruction only in functions and function blocks. If you use it in a program, a building error
will occur.
• Always connect this instruction directly to the left bus bar.
• Before you execute this instruction set the return values, output variables, and ENO value of the
POU.
• If you use this instruction too often, the flow of processing will be difficult to understand. Use it with
caution.
Instruction Name FB/FUN Graphic expression ST expression
RETURN Return FUN RETURN;
Variables
Function
Precautions for Correct Use
RETURN
EN ENO
RETURN;
LD ST
B
A
abc
SR
Set1 Q1
Reset
SR_instance
SR_instance(A, B, abc);
RETURN
EN ENO