NEXCOM NViS 2310 - Manual (Page 70)

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Appendix C: Signal Connection of DI/DO
NViS2310 User Manual
Dry Contact
Each channel can accept 3~24Vdc voltage. And it is able to drive 150mA
current for low level.
The SW2 needs to switch to “OFF” state. The GPO signal will no have a pull
up resistor internally when you switch “SW2” to “OFF” state.
The figure below shows how to connect an external input source to one of
the output channel.
Digital Output
CN14 connector for GPO signal (digital signal output)
The CN14 connector has 4 digital output channels by default. The signal
connection of CN14 support two connected methods for output signal type.
The output signal has two states, one is low level (driven to 0V from GPO
signal) other is open (high voltage is provided from external device).
Wet Contact (default)
The SW2 needs to switch to “ON” state. The GPO signal will have a pull up
resistor to 5V internally when you switch “SW2” to “ON” state. The output
signal has two states, one is low level (driven to 0V from GPO signal ) other
is high level (driven to 5V from GPO signal).
The figure below shows how to connect an external input source to one of
the output channel.
GPO
Register
Port
1 HIGH
0 GND
GPO
Register
Port
1 OPEN
0 GND
External Internal
GPIO1
GPO5
GPO6
GPIO2
GPIO7
GPO4
GPIO8
GPIO3
GPIO_GND
CN14
9
10
11
12
13
14
15 7
16
VCC5
6
11
5
12
4
13
External Internal
GPIO1
GPO5
GPO6
GPIO2
GPIO7
GPO4
GPIO8
GPIO3
GPIO_GND
CN14
9
10
11
12
13
14
15 7
16
Resistor
External power