). If an invalid value is typed in this field, there is an error indicator shown until the error is corrected. If the Symbol Editor is closed prior to correcting one or more errors, the field reverts to the last correct value.Symbols
Symbols are graphical representations of devices or functions. That is, a Crestron symbol could represent anything from a simple AND gate to a complex set of functions for a Blu-Ray Player.
A Symbol may have inputs, outputs, and parameters, collectively known as arguments.
Inputs and outputs of a symbol can be of type:
Digital (displayed in blue)
Analog (red)
Serial (black)
Ambiguous (green) – usually occur on a few symbols that allow analog or serial signals
Parameters of a symbol can be of type :
decimal number (a signed number from -32K to +32K, or unsigned from 0 to 64K)
hexadecimal number (up to 4 hexadecimal digits)
percent (0 to 100%)
string
time
0 to 64K followed by a “t” for “ticks” equivalent to a hundredth of a second OR
0 to 640 seconds, with 2 decimal places allowed, followed by “s”, e.g. 1.75s
filename
The allowed type of any parameter can be determined by looking at the help text for that symbol (click on the symbol and press ). If an invalid value is typed in this field, there is an error indicator shown until the error is corrected. If the Symbol Editor is closed prior to correcting one or more errors, the field reverts to the last correct value.
Each argument has a “cue”, or short explanatory text, that is a reminder of the argument’s functionality. The cue directly follows a small rectangular block underneath the line where the signal or parameter value is entered. The help text for the symbol is indexed by the cue.
Signals
Signals are used as paths between the Symbols. Imagine them like wires from one contact on an integrated clip to another contact on another clip. You create Signals by entering text at the appropriate place on a Symbol.
Signals may only be connected to inputs or outputs of the same type. When a signal is connected to an ambiguous argument, the type of the argument is then constrained to match that of the signal.