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USBG-422MiNi – Product Manual
www.coolgear.com
3.
RS422 / RS485 Pin-outs
RS-422/485 Full Duplex Mode Pin-out
The table below shows the RS-422 / 485 full duplex mode pin-out of the terminal block
connector.
Pin Number
Pin Type
Description
1
Output
TxD- Transmit Data, negative polarity
2
Output
TxD+ Transmit Data, positive polarity
3
Input
RxD+ Receive Data, positive polarity
4
Input
RxD- Receive Data, negative polarity
5
Power
VCC DC +5V
6
Ground
GND Signal Ground
RS-485 Half Duplex Mode Pin-out
The table below shows the RS-485 half duplex mode pin-out of the DB-9 Male
connector.
Pin Number
Pin Type
Description
1
Out / In
Data- Transmit / Receive Data, negative polarity
2
Out / In
Data+ Transmit / Receive Data, positive polarity
5
Power
VCC DC +5V
6
Ground
GND Signal Ground
RS-485 half duplex pin-out for terminal block connector.
