Omron NJ-series User Manual page 273

6 Programming
Var1 := Var2;
You cannot make assignments to union variables. You must make the assignments to individual
members of the unions.
 RETURN
Overview:
The following actions occur depending on where the ST statement is used.
ST
The ST program is ended during operation and the next program is executed.
ST in a Function Inside a Function Block Instance
The function or function block is ended during operation and the next instruction after the calling
instruction is executed.
Inline ST
The POU that contains inline ST with a RETURN statement is ended.
Reserved Words:
RETURN
Statement Structure:
RETURN;
Application:
Use this statement to force the current program, function, or function block to end.
 IF with One Condition
Overview:
The construct executes the specified statement when a condition is met. If the condition is not met,
another statement is executed. The following expressions are used to specify whether the condition
is met.
TRUE: The condition is met.
FALSE: The condition is not met.
Reserved Words:
IF, THEN, (ELSE), END_IF
Note You can omit ELSE.
Construct Structure:
IF <condition_expression> THEN
<statement_1>;
ELSE
<statement_2>;
END_IF;
6-86 NJ-series CPU Unit Software User's Manual (W501)