Digital input, External internal, Dry contact – NEXCOM NViS 3620 User Manual
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Appendix C: Signal Connection of DI/DO
NViS3620/3720 series User Manual
Dry Contact:
Digital Input
CN3 connector for GPI signal (digital signal input)
The CN3 has 4 digital input channels by default.
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.
External
Internal
GPIO1
GPI5
GPI6
GPIO2
GPIO7
GPI4
GPIO8
GPIO3
GPIO_GND
CN3
9
10
11
12
13
14
15
7
16
VCC5
6
11
5
12
4
13
1K
1K
External
Internal
GPIO1
GPI5
GPI6
GPIO2
GPIO7
GPI4
GPIO8
GPIO3
GPIO_GND
CN3
9
10
11
12
13
14
15
7
16
Resistor
External power
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