====== ST language commands ====== The ST language commands are ending by a semicolon. The EOL character is treated in the same way as the space character. ^Command^Description ^Example ^ |:= |Assignment.\\ The value calculated on the right is assigned to the identifier on the left. |A := B; C := SIN(X); My_FB(p1 := 10, p2 := 20);| |=> |Assignment.\\ Value of the variable declared on the left is assigned to the identifier on the right. |FB1(out1 => my_var);| |REF= |Reference.\\ Variable on the left is filled with reference to the value on the right. |MyVar := 100; MyRef REF= MyVar; MyRef := 200;| |IF |Selection command.\\ If the BOOLean condition is met the associated command is executed. |


IF A > 10 THEN
    B := 1;
ELSE
    B := 2;
END_IF;

| |CASE |Selection command.\\ Execution of a block of commands if the CASE condition is met. |

CASE TW OF
    1,5: DISPLAY := OVEN_TEMP;
    2: DISPLAY := MOTOR_SPEED;
    ELSE DISPLAY := STATUS;
END_CASE;

| |FOR |Iterative command.\\ A loop of block of commands with an initial value, end condition, and increment value.|

FOR I := 0 TO 10 BY 2 DO
    J := J + 3;
END_FOR;

| |WHILE |Iterative command.\\ A loop of block of commands with condition for exiting the loop at the beginning. |

WHILE J < 10 DO
    J := J + 2;
END_WHILE;

| |REPEAT |Iterative command.\\ A loop of block of commands with condition for exiting the loop at the end. |


REPEAT
    J := J + 2;
UNTIL J > 10;