Addr.: Unit 704, No. A3 Building, Tel: +86-592-6211770
3
rd
Software Park, Xiamen, China 361000 Fax: +86-592-6211727
www.bivocom.com
10
6
IO4
GPIO, able to check dry contact
signal and 3.3 V switch signal,
output 3.3V switch signal
Customized
pulse
output, pulse counter,
analog quantity input,
Reserved RS232 RI
7
IO5
GPIO, able to check dry contact
signal and 3.3 V switch signal,
output 3.3V switch signal
Customized
pulse
output, pulse counter,
analog quantity input
8
GND
Power Ground
NA
9
RX
RS232 Receive Data
NA
10
TX
RS232 Transfer Data
NA
11
A
RS485 anode
Reserved RS232 DTR
12
B
RS485 cathode
Reserved RS232 DSR
2) Connect Power Cable and Console Cable
Connect the power supply cable and console cable to terminal block.
The interface of TW810 is industrial terminal block, we suggest you use 28-16AWG power
cable and console cable.
Definition of power cable and console cable in this package are as below
Power Cable (Output 12VDC/0.5A)
Color of cable
Power Output Polarity
Black & White Alternate
Anode
Black
Cathode
RS232 Cable (with DB9 female interface)
Color of Cable
Corresponding DB9-M
Pin Number
Blue
3
Brown
2
Black
5
WARNING: make sure you connect the terminal block to TW810 NB-IoT modem
correctly before power on, or it may cause the damage of device.
3.3 Power Supply
After all the accessories and cables mentioned above are installed very well and correctly,
then plug the power supply to power outlet.
TW810 adopts advanced power technology to improve the stability and adapt to complex
external environment. You can use Bivocom standard power adapter(12VDC/500mA), or
use DC power ranging at 5-35VDC, please make sure the power supply is stable
enough(Ripple shall be less than 300mA, and Instantaneous voltage shall not larger than
