Dpl Programming; Program Headers - Control Techniques UD70 User Manual

4

DPL Programming

This chapter explains the following parts of a

• Program headers

• Comments
• Variables
• Parameters
• Tasks
• User-defined sub-routines
• Instructions
The explanation is followed by a section on optimizing
4.1 Program headers
A program must begin with five program headers in the correct order,
DPL
as follows:
• Program title
• Program version
• Drive name
• Author name
• Company name
Each program header must be contained on a single instruction line in
the program.
Program title
Syntax $TITLE Program title
The
$TITLE
eg.
$TITLE
Maximum length: 64 characters
Program version
Syntax $VERSION Version Number
The
$VERSION
recommended that the format of the version number should be as follows:
$VERSION
Minor updates can be shown by increasing the last digit, eg. 1.0.2
modifications can be shown by increasing the first digit, eg. 2.0.0
Maximum length: 8 characters
UD70
Issue code: 70nu2
Program title Program title is for use by the programmer.
Sawtooth generator Sawtooth generator
Version Number Version Number is for use by the programmer. It is
1.0.1 1.0.1
DPL programming
program:
DPL
programs.
DPL
1.0.2. Major
2.0.0.
4-1