Digital Input - Nexcom nROK 1020 Series User Manual

Appendix D: Signal Connection of Programmable DI/DO

Digital Input

Wet Contact (default)
The GPI signals have a pull up resistor to 5V internally.
The figure below shows how to connect an external output source to one
of the input channel.
Internal
VCC5
1K 1K
15
GPI2 13
GPI1 3
GPI4 4
GPI3 9
GPI5 14
GPIO_GND
CN2
Copyright © 2022 NEXCOM International Co., Ltd. All Rights Reserved.
External
External GPI
Port
Switch Register
ON (Short) GND 0
OFF (Open) OPEN 1
60
Dry Contact:
Internal
7
GPI2 13
GPI1 3
GPI4 4
GPI3 9
GPI5 14
GPIO_GND
CN2
External
External power
Resistor
External GPI
Port
Switch Register
ON (Short) GND 0
OFF (Open) HIGH 1
VTC 1020 and nROK 1020 Series User Manual