GPIO In (Core 110f, 110c)

The General Purpose Input Output (GPIO) is used to integrate Q-SYS with custom or third-party controls. Using the GPIO Output you can control external hardware. With the GPIO Input, you can control certain aspects of Q-SYS using external hardware.

The GPIO pins in Q-SYS Designer are representative of the pins on the color-coded (black) Euro-style connector on the rear panel of the Core. The numbers stamped on the rear panel relate to the GPIO pins in Q-SYS Designer. Notice that the first and last pins on the top and bottom rows are not numbered: they are not GPIO pins.

Controls

The following table describes the controls available in the GPIO Input Control Panel.

Control	Function	Default / Range
Digital Input (LED)	This LED illuminates when there is a digital input on a GPIO pin. Each of the following Types of input has an LED to indicate a digital input is present: Digital Input (+3.3VDC) Contact Closure – When this Type is selected, the pin has approximately 9.5VDC present, the LED is lit. Raw	Off / On
Analog Input (Knob)	The analog input knob is provided when one of two Input Types is selected. Analog – allows a low impedance, 0 – 24VDC signal input Raw Both input voltages are displayed on a read-only knob control.
Potentiometer Min Position Calibrate Min Max Position Calibrate Max	The Potentiometer knob follows the position of the physical potentiometer connected to the GPIO pin. To calibrate Q‑Sys to the potentiometer: Turn the physical potentiometer to its minimum position. Click the Calibrate Min button. A value displays in the Min Position field. Turn the physical potentiometer to its maximum position. Click the Calibrate Max button. A value displays in the Max Position field. If you know the values for Min Position and/or Max Position, you can enter them manually.	N / A
Pullup Enable	Provides a 5.11K Pullup resistor to +12VDC on the input pin when the Type is Raw.	Off / On

Control

Function

Default / Range

Digital Input
(LED)

This LED illuminates when there is a digital input on a GPIO pin. Each of the following Types of input has an LED to indicate a digital input is present:

Digital Input (+3.3VDC)
Contact Closure – When this Type is selected, the pin has approximately 9.5VDC present, the LED is lit.
Raw

Off / On

Analog Input
(Knob)

The analog input knob is provided when one of two Input Types is selected.

Analog – allows a low impedance, 0 – 24VDC signal input
Raw

Both input voltages are displayed on a read-only knob control.

Potentiometer

Min Position

Calibrate Min

Max Position

Calibrate Max

The Potentiometer knob follows the position of the physical potentiometer connected to the GPIO pin. To calibrate Q‑Sys to the potentiometer:

Turn the physical potentiometer to its minimum position.
Click the Calibrate Min button. A value displays in the Min Position field.
Turn the physical potentiometer to its maximum position.
Click the Calibrate Max button. A value displays in the Max Position field.

If you know the values for Min Position and/or Max Position, you can enter them manually.

N / A

Pullup Enable

Provides a 5.11K Pullup resistor to +12VDC on the input pin when the Type is Raw.

Off / On

Properties

Property	Function / Choices
GPIO-1 to 16 Type	Selects the Type of GPIO input Digital Input (TTL 3.3V) Contact Closure Input Potentiometer (10k ohm, 12V) Potentiometer (2-wire) Analog Input (0-24V, Low z) Raw

Property

Function / Choices

GPIO-1 to 16
Type

Selects the Type of GPIO input

Digital Input (TTL 3.3V)
Contact Closure Input
Potentiometer (10k ohm, 12V)
Potentiometer (2-wire)
Analog Input (0-24V, Low z)
Raw

Control Pins

The available Control Pins depend on settings in Properties. Each of the following Control Pins are available on all GPIO Input pins.

Pin Name	Value	String	Position	Pins Available
Digital Input (LED)	0 1	false true	0 1	Output
Contact Closure (LED)	0 1	false true	0 1	Output
Potentiometer	0 to 1.00	0 to 1.00	0 to 1.00	Output
Minimum Position ¹	0 to 1.00	0 to 1.00	0 to 1.00	Input / Output
Minimum Calibrate ¹	0 1	false true	0 1	Input / Output
Maximum Position ¹	0 to 1.00	0 to 1.00	0 to 1.00	Input / Output
Maximum Calibrate ¹	0 1	false true	0 1	Input / Output
Analog Input (Knob)	0 to 24	nn.nnnV	0 to 1.00	Output
Raw
Digital Input (LED)	0 1	false true	0 1	Output
Analog Input (Knob)	0 to 24	nn.nnnV	0 to 1.00	Output
Pullup Enable	0 1	false true	0 1	Output
1. These control pins are selectable in the Control Pins list at the bottom of the GPIO selections. You must select the Type (Potentiometer or Raw) to make these Control Pins accessible.

Pin Name

Value

String

Position

Pins Available

Digital Input
(LED)

false

true

Output

Contact Closure
(LED)

false

true

Output

Potentiometer

0 to 1.00

Output

Minimum Position ¹

0 to 1.00

Input / Output

Minimum Calibrate ¹

false

true

Input / Output

Maximum Position ¹

0 to 1.00

Input / Output

Maximum Calibrate ¹

false

true

Input / Output

Analog Input

(Knob)

0 to 24

nn.nnnV

0 to 1.00

Output

Raw

Digital Input

(LED)

false

true

Output

Analog Input

(Knob)

0 to 24

nn.nnnV

0 to 1.00

Output

Pullup Enable

false

true

Output

1. These control pins are selectable in the Control Pins list at the bottom of the GPIO selections. You must select the Type (Potentiometer or Raw) to make these Control Pins accessible.

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