Symbols & Signals; Symbol Properties - Crestron SW-SIMPL Installation & Operating Manual

Software
Symbols & Signals
52 • Crestron SIMPL Windows

Symbol Properties

Although each symbol serves a special purpose, all symbols share some basic
properties. These properties are inputs, outputs, and parameters.
Example: Analog Ramp Symbol
Inputs
Symbol inputs allow signals to be connected from other parts of the program.
Depending upon the symbol type, the current state of the input signal(s) may affect
one or more output signal(s). Some symbols have a fixed number of inputs, while
others can have a variable number of inputs, determined by the programmer based
upon need.
Outputs
Except for a few special cases, the ultimate purpose of a symbol is to modify the
states of its outputs. These output states will depend upon the symbol type, the
current or past states of the input signals, and the values of the parameters. Because
the symbol alone determines the states of its output signal(s), the symbol is
considered the driving source for the output signals. Similar to symbol inputs, the
number of symbol outputs is fixed for some symbols, or can be variable based on
need for other symbols.
Parameters
Some symbols also have parameters, which are constant values that help determine
how the symbol behaves. For example, a symbol that delays an action for a specified
period of time would have a parameter determining how long the delay should be.
The exact function of a parameter depends solely on the symbol type itself. For
convenience, parameters may be expressed in a variety of formats (all of which are
directly related to one another). Although they will default to one format based upon
the symbol type, this format can be altered by changing the format specifier at the
end of the value.
Crestron SIMPL™ Windows
Installation & Operations Guide –DOC. 5728C