Nexcom VTC 7260 - Digital Input

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Appendix E: Signal Connection of DI/DO
VTC 7260 Series User Manual
Dry Contact:
The SW2 switch needs to switch to “Low” state. The GPI signal will not have
a pull up resistor internally.
The figure below shows how to connect an external source to one of the
input channels.
Digital Input
CN12 connector for GPI signal (digital signal input). The CN12 connector
has 4 digital input channels by default.
Wet Contact (default)
The SW2 switch needs to switch to “ON” state. The GPI signals have a pull
up resistor to Vin Voltage internally.
The figure below shows how to connect an external source to one of the
input channels.
External
Switch
Port
GPI
Register
ON (Short) GND 0
OFF (Open) OPEN 1
External
Switch
Port
GPI
Register
ON (Short) GND 0
OFF (Open) HIGH 1
Internal InternalExternal External