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16
7.4.2
GPIO Control Setup
GPIO Button Mode
There are two options; GPO and AXP CMD.
GPO
When this option is selected the GPIO port on the back of the CP-16 is configured for output.
When buttons 1 through 8 are pressed the corresponding GPO wire on the port will go high
(5 Volts). Only the actively lit button will be high, the other GPO wires will be low (0
volts).
The AXP command for the button will also be sent via TCP/IP to the multiviewer. The GPO
output can be used to trigger any external equipment.
Apantac Tahoma Multiviewer's also have a GPIO port and the CP-16 GPO can be used to
trigger these inputs if desired. The multiviewer must be configured to respond to GPIO
inputs.
AXP CMD (GPI)
When this option is selected the GPIO port on the back of the CP-16 is configured for input.
An internal 5-volt source is provided through a 'pull-up' resistor. All inactive inputs of the
GPI port will be high.
When the corresponding GPO wire on the port is brought low (shorted to the port's ground
pin by an external relay or open-collector GPO of an external piece of equipment) the
corresponding button will be selected (buttons 1 through 8). The button will lite and the
command will be sent via TCP/IP to the multiviewer.
Содержание CP-16
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