NetLinx Programming Overview
10
NetLinx Programming Language Reference Guide
Data Types
NetLinx expanded the types of data handled beyond the 8-bit and 16-bit integers handled by Axcess.
NetLinx supports integers up to 32-bits and signed values to allow positive and negative values. The
following table lists the data types available to NetLinx.
Constants
The DEFINE_CONSTANT section in NetLinx is similar to the DEFINE_CONSTANTS section in Axcess.
The scope of the constant extends throughout the module in which it is defined. If the
DEFINE_CONSTANT section appears in the main program or in an include file, the constant's scope
extends globally throughout the program.
DEFINE_CONSTANT accepts data in these formats:
The standard format for
DEFINE_CONSTANT is:
<constant name> = <constant expression>
Data Types Supported by NetLinx
Type
Names
Used to Store Data Ranges Sample of Stored Values
CHAR Single byte values and character
strings
0 to 255 (8-bit) 'a', 145, $FE, 'The quick gray fox'
WIDECHAR Wide character strings dealing with
Unicode fonts that use 16-bit character
codes (and most Far-eastern fonts)
0 to 65,535 (16-bit) "'OFF',500"
INTEGER Default variable value to store values
up to 65,535
0 to 65,535 (16-bit) 512, 32468, 12
SINTEGER Signed integer values both greater
than and less than zero
32,767 to 32,767
(16-bit)
24, -24, 568, -568
FLOAT Small real numbers with 5 digits of
precision
10e-38 to 10e38 1.2345
123.451.2345e5
-16.323.1415
DOUBLE Large real numbers with 15 digits of
precision
10e-308 to 10e308 1.23456789012345
12,345,678.9012545
3.14159265358979
-0.048512934
LONG Stores large integer values esp.
greater than 65,535
0 to 4,294,967,295
(32-bit)
1,000,000
2,000,046
SLONG Signed large integer values less than -
32,767 and greater than 32,767
-2,147,483,647 to
2,147,483,647
(32-bit)
-1,000,000
1,000,000-2,000,000
2,000,000
DEFINE_CONSTANT Data Formats
Types Formats Examples
Decimal Integer 0000 1500
Hexadecimal Integer $000 $DE60
Binary Integer 000b 01110011b
Floating Point 000.0 924.5
Exponential Notation 0.0e0 .5e-12
Character 'c' or <char code> 'R' or 255
String Literal 'ssss’ 'Reverse'
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