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Crestron CT-1550 Wired 5.7 Inch Tabletop Touchpanel

Operations Guide – DOC. 6116A Wired 5.7 Inch Tabletop Touchpanel: CT-1550 • 13

In SIMPL Windows, the signal types are color-coded as follows:

Digital = Blue

Analog = Red

Serial = Black

Other = Green

NOTE: “Other” signals are a combination of the three basic types (e.g. many

symbols accept either analog or serial signals where the combination is shown as a

green signal). The signal type is displayed on the Status Bar when the signal is

highlighted.

For additional information, refer to Doc. 6120, Crestron SIMPL Windows Symbol

Guide. It may be downloaded from the Crestron website.

Digital Signals

A digital signal contains one bit of information and usually takes on one of two

values: 1 or 0. These two digits can represent the logical values true and false, and

they can be represented in an electronic device by the states on/off or high/low,

recognized as two voltage levels. (Other common descriptors are active/inactive.)

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

-1). This 16-bit property makes analog signals useful for

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.

CT-1550 Input/Output Signals

The CT-1550 symbol provides up to 999 digital and 255 analog input and output

joins, and up to 127 serial input joins. The programmer selects the signal types by

clicking on the appropriate button at the top of the Symbol Detail view when

programming the panel.

The following tables list and give functional descriptions for the touchpanel outputs

and inputs.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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