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Macros
In the example above, a toggle switch object was placed on the screen as a '+' button. When this button is pushed, it
forces LB:1 to ON and the 'AddTwo' macro executes, storing the result in LW:2 and turning LB:1 to OFF and the
macro stops.
Vari ables, Dec la ra tions and Mem ory Us age
Variables, constants & functions are named by the programmer. Variables and constants are called operands.
Variable names can be any character or number (a-z, A-Z, 0-9, or '_') and can be as many characters as you need to
describe it (the compiler has been tested to variable name lengths of 32 characters, but it is best to keep the variable
names small for ease of reading the code). Variable names are not case sensitive, so 'result' is the same as 'ReSult'
or 'RESULT'. Variable names must always start with a letter (i.e. variables cannot begin with a number or the
underscore '_' character).
Memory Usage
Macros use a minimum of about 2.5K, plus the memory required for each variable type:
• float: 4 bytes (32-bits)
• int: 4 bytes (32-bits)
• short: 2 bytes (16-bits)
• char: 1 byte (8-bits)
Tog gle Switch Ob jects At trib utes Dialog
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1010-1007W, Rev 06
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