Crestron STX-1700CW Operation Manual page 24

Wall Mount 2-Way RF Compact Color Touchpanel
20 • Wall Mount 2-Way RF Compact Color Touchpanel: STX-1700CW
Analog Signals
Unlike digital signals, analog signals can vary continuously in value, in the same
manner as a parameter such as volume, temperature, or pressure. Analog signals
contain 16 bits of information, which means that this type of signal can have values
ranging from 0 to 65535 (2
controlling devices that do not have discrete settings, such as volume controllers,
pan/tilt head controllers, and lighting dimmers.
Serial Signals
Serial signals are much like analog signals, in that they, too, contain 16 bits of
information. However, whereas the value of an analog signal is used directly–to
control volume or temperature, for instance–the value of the serial signal is used as a
pointer to a location in memory that contains a string of characters. When a serial
signal is routed to a symbol, that symbol can identify the signal as serial rather than
analog and it will automatically look at the data to which it points.
Thus, serial signals are used to facilitate the transmission of serial data (strings of
characters). These signals can be generated by incoming data on a COM port or by a
symbol that has a serial output.
STX-1700CW Input/Output Signals
The STX-1700C symbol provides up to 999 digital joins, up to 256 analog joins, and
up to 127 serial input joins. The programmer selects signal types by clicking on the
appropriate button at the top of the Symbol Detail view when programming the panel.
The tables below list functional descriptions for the touchpanel digital outputs and
inputs.
Digital Output Signal Descriptions
OUTPUT
press 1 through press 999
Digital Input Signal Descriptions
INPUT
fb 1 through fb 999
Analog Output Signal Descriptions
OUTPUT
an_act 1 through an_act 256
Analog Input Signal Descriptions
INPUT
an_fb 1 through an_fb 256
Serial Input Signal Descriptions
INPUT
text-o1 through text-o127
Crestron STX-1700CW
16
-1). This 16-bit property makes analog signals useful for
DESCRIPTION
Notifies control system of button press (1 – 999).
High/1 = press On
Low/0 = press Off
DESCRIPTION
Notifies panel of button press (1 – 999).
DESCRIPTION
Notifies control system of an analog action (1 – 256).
Any value from 0 through 65535
DESCRIPTION
Notifies panel of analog feedback (1 – 256).
DESCRIPTION
Notifies panel of text string (1 – 127). Also called
indirect text.
Operations Guide – DOC. 6228A