Programming Fundamentals
3-3
Following the security password is a Root Number, and sometimes, a
Post-Root Number. (Some of the tables in this manual use the term “Code” to
mean root number or post-root number.)
• The root number tells the controller which function the user wishes to
program.
• Root numbers are either 2 or 4 digits long, and consist only of the numbers
0–9. (Technically, when a root number is 4 digits long, a post-root number
comprises the second 2 digits. Generally, we use the term root number to
mean both the root and post- root number.)
• Each control command has a unique root number.
• The root number is fixed by the controller's internal software, and cannot be
changed.
Following the root number is one or more Data Digits.
• Data digits may be thought of as “variables.”
• Some commands are quite simple, and do not need any data digits. Other
commands require a string of data digits.
• A particular command may have more than one type of data digit (x, y, or
z).
• Do not confuse the types of variables with the number of data digits. The
number of symbols (x, y, or z) indicate the number of digits expected by the
controller. For example, “xx yyy zzzz” means enter two digits of data digit x,
3 digits of data digit y, and 4 digits of z.
Following the Data Digits (if any) is a Terminator.
• The terminator can be either the star character (*) or a carrier drop (if
enabled).
• The star character will always work as a terminator; in fact, it is necessary
when programming the controller via the telephone, since there is no carrier
to drop.
• The terminator tells the controller that the command has ended.
• It is necessary, since control commands vary in length.
• The terminator is similar to a “carriage return” on a computer keyboard, or
the “equals” key on a calculator.
Example Control Command
Here's an example of a control command:
99 63 00 0 *
Note: We've put spaces between some digits to help explain this example.
However, you do not need any pauses between the digits when you are
programming the controller.