2-44
Section 2 Programming Languages
Format
Description
Related section
:=
Assignment statement.
Assigns the value of the expression, variable, or numeric value on the right-hand side to
the variable on the left-hand side.
FEH200
2-5-4
IF
Condition statement.
Executes the executable statement if the conditional expression is true.
CASE
Condition statement.
Selects the executable statement to be executed according to the value of the conditional
expression.
FOR
Iteration statement.
Repeatedly executes the executable statement according to the initial value, final value,
and incremental or decremental value.
WHILE
Iteration statement.
Repeatedly executes the executable statement while the loop condition is true.
REPEAT
Iteration statement.
Repeatedly executes the executable statement until the loop condition is true.
RETURN
Return statement.
Returns control from the called function or function block to the calling POU.
EXIT
Exit statement.
Used to exit an iteration loop.
2-4-2 ST statements
