Variable Types and Special Variables

The variable type defines how and where you can use a variable. Variables types are defined in the variables declaration.

• Local Variables - VAR
• Input Variables - VAR_INPUT
• Output Variables - VAR_OUTPUT
• VAR_IN_OUT variables - VAR_IN_OUT, VAR_IN_OUT CONSTANT
• Global Variables - VAR_GLOBAL
• Temporary Variable - VAR_TEMP
• Static Variables - VAR_STAT
• External Variables - VAR_EXTERNAL
• Instance Variables - VAR_INST
• Remanent Variables - RETAIN, PERSISTENT
• Configuration Variables - VAR_CONFIG
• SUPER
• THIS
• Variable Types - ‘Attribute Keywords’