Crestron SIMPL Windows uses “named signals” to wire up programming logic. These signals are referred to as digital (either high or low), analog (a 16-bit number), or serial (a string of characters). Color is used to distinguish what type a signal is–blue for digital, red for analog, black for serial, green for ambiguous–but otherwise, your only clue about what information a signal carries is left up to its name.
How then should you name your signals? Let’s look at a few examples and see why they are good choices for signal naming.
Kiel the Coder 