8
RS485 Connection
RS485 Fingerprint Reader Connection
RS485 Fingerprint Reader
DIP Settings
485- 485+ GND +12V GND
Distance:
more than 200 meters
1
8
485B
485A
GND
TXD
RXD
GND
WD1
WD0
12V DC Adaptor
There are six DIP switches which are located on the back of RS485 fingerprint
reader: switches 1 to 4 are for RS485 address, switch 5 is reserved, switch 6 is for
noise reduction on long RS485 cable.
If the RS485 fingerprint reader is powered from the terminal, the length of
wire should be less than 100 meters or 330 feet.
The number 6 switch should be turned on if the cable length exceeds 200
metres or 600 feet as shown below.
1.
2.
3.
