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90 Chapter 11 Variables

the screens. It could use a series of If-Then statements based on the value of “Video Screen

Number” to determine which screen to draw. Whenever you want to display a new screen, set the

“Video Screen Number” variable to the desired screen and run the macro.

Variables can also be viewed on a TV through the video screen system. You can see the current values of

all variables, and even watch them change in real time. You can also change the values at any time with an

infrared remote control.

Variable Commands

The following variable commands can be included in a schedule. They can all also be issued to the

controller over the serial interface. The format for sending commands over the serial interface is described

in a text file installed in the application directory.

These commands are entered in your schedule from the actions entry screen by clicking the appropriate

toolbar button. The command and selected variable(s) are chosen from the pull-down list.

Standard Variable Commands

Variable “XXX” = ###

Sets variable “XXX” to the constant value ###. When you enter this command in a schedule, you

select the specific variable “XXX” from a pull-down list. When you send this command over the

serial interface, the variable is referred to by its ID number (0 to 255). ### can be any integer

between 0 and 255.

Variable “XXX” = Variable “YYY”

Puts the value of variable “YYY” into variable “XXX”.

Variable “XXX” = Random Number

This command generates a random number between 0 and 255 (inclusive) and puts it into variable

“XXX”.

Variable “XXX” = Result Value

Puts the value of the system variable “Result Value” into variable “XXX”. See the "Miscellaneous"

chapter for a detailed description of Result Value. Result Value will contain different values

depending on the previously-executed command.

Math Commands

Increment Variable “XXX” [Stop At 255]

Increments (i.e. adds 1 to) variable “XXX” until it reaches 255. The value of “XXX” increases by one

each time this command is executed, until 255 is reached. If the initial value (before executing the

command) is 255, it will not increment

. Further increment commands will not affect the variable’s

value; it will remain at 255). If you want it to roll over to zero, use the “Increment Variable “XXX”

[Roll Over at 255]” command.

Increment Variable “XXX” [Roll Over At 255]

Increments (i.e. adds 1 to) variable “XXX”. If the initial value is 255, it will roll over to zero.

Variable “XXX” = Variable “XXX” + ###

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