ST Statement: IF The IF statement is used for checking a condition and, depending on this condition, for executing the subsequent statements. A condition is coded as an expression that returns a Boole

ST Statement: FOR The FOR loop is used to execute statements with a certain number of repetitions. Syntax: FOR <counter> := <start value> TO <end value> {BY <increment> } DO <instructions> END_FOR; Th

ST Statement: CASE The CASE statement is a conditional control structure which causes a statement or a section of a statement to be executed only under a specific condition. The section which is execu

ST Statement: RETURN Use the RETURN statement in order to exit from a function block. You can make this dependent on a condition , for example. Example 64 . Example IF xIsDone THEN RETURN; END_IF; iCo

ST Statement: EXIT The EXIT statement is used in a FOR loop, WHILE loop, or REPEAT loop in order to end the loop regardless of other abort conditions. :

ST Function Block Call Calling a function block in ST Syntax <FB instance>(<FB input variable>:=<value or address>\|, <other FB input variables>); Example 67 . Example TMR:TON; TMR (IN:=%OX5, PT:=T#30

Structured Text and Extended Structured Text (ExST) :

ST Editor The ST editor is a textual editor used for the implementation of code in Structured Text (ST) and Extended Structured Text (ExST). The line numbering is displayed on the left side of the edi

ST Editor in Online Mode In online mode, CODESYS  displays the variables and expressions in the ST editor ( Monitoring of Values ). The writing and forcing of variables and expressions as well as debu

Assignments :