Basic Operations

Data Manipulation

These are the language features for basic data manipulation:

• Assignment :=
• Bit Access
• Call a Function
• Call a Function Block
• Call a Sub-Program
• CountOf
• DEC
• INC
• MoveBlock
• NEG - integer negation (unary operator)
• Parenthesis (  )

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 "Structured text" A high-level language that is block structured and syntactically resembles Pascal program.
WHILE  DO  END_WHILE	Repeat a list of statements while a condition is TRUE.