Basic Operations

Data Manipulation

These are the language features for basic data manipulation:

• Assignment := - Variable assignment.
• Bit Access
• Function Call
• Call a Function Block
• Call a Sub-Program
• CountOf - Returns the number of items in an array.
• DEC - Decrease a numerical variable.
• INC - Increase a numerical variable.
• MoveBlock - Move / Copy items of an array.
• NEG - Performs a negation of the input. (unary operator)
• Parenthesis (  ) - Force the evaluation order in a complex expression.

Control Program Execution

Language Features

These are the language features to control program execution:

• Jumps  JMP  JMPC  JMPNC  JMPCN
• LABELS
• RETURN  RET  RETC  RETNC  RETCN

Structured Statements

These are the structured statements to control program execution:

Statement	Description
CASE  OF  ELSE  END_CASE	Switch to one of various possible statements.
EXIT	Exit from a loop instruction.
FOR  TO  BY  END_FOR	Execute iterations of statements.
IF  THEN  ELSE  ELSIF  END_IF	Conditional execution of statements.
ON	Conditional execution of statements.
REPEAT  UNTIL  END_REPEAT	Repeat a list of statements.
WAIT / WAIT_TIME	Suspends the execution of an ST program.
WHILE  DO  END_WHILE	Repeat a list of statements while a condition is TRUE.