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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

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