NEXCOM VTC 7100-C8SK - Manual (Page 82)

Copyright © 2012 NEXCOM International Co., Ltd. All Rights Reserved. 68
Appendix D: Signal Connection of DI/DO
VTC 71-C Series User Manual
The figure below shows how to connect an external output source to one
of the input channel.
Appendix D: Signal Connection of DI/DO
Digital Input
CN18 connector for GPI signal (digital signal input)
The CN18 has 4 digital input channels.
Dry Contact (default)
The GPI signals have a pull up resistor to 5V internally.
G_IN1
G_IN3
G_OUT2
G_OUT4
G_IN2
G_OUT3
G_OUT1
G_IN4
GPIO_GND
CN1
SIO-F-90-5.08mm
CN18
SIO-F-90-5.08mm
5
9
4
8
3
7
2
6
1
External Internal
G_IN4
G_IN1
G_IN2
G_IN3
GPIO_G
VCC5
ND
ULN2003ADR ULN2003ADR
1B 1
2B 2
3B
3
4B
4
5B
5
6B 6
7B 7
1C 16
2C 15
3C
14
4C
13
5C
12
6C 11
7C 10
E
8
COM
9
RN1
1K RN1
1K
1
8
2
7
3
6
4
5
ON==>GND
OFF==>OPEN
GPIO Pinout Description
G_IN1
G_IN3
G_OUT2
G_OUT4
G_IN2
G_OUT3
G_OUT1
G_IN4
GPIO_GND
CN1
SIO-F-90-5.08mm
CN18
SIO-F-90-5.08mm
5
9
4
8
3
7
2
6
1
Wet Contact:
Please contact sales for further information.