7
TXD
RXD
GND
RS232
Reader
485+
485-
GND
RXD
GND
TXD
RS232
Reader
RS485
Reader
RXD2
TXD2
GND
RXD
TXD
GND
485A
485B
RS485 and RS232 Connection
Wiegand Reader Connection
Wiegand Reader
Access controller
+12V
IWD1
IWD0
GND
WD1
WD0
Wiegand card reader connects to the top 4 pins of the wiegand terminal and the last
two pins are used by the Access controller, as shown in the following figure. It sends the
credentials to the device via wiegand communication.
The RS485 and the RS232 lets user connect to multiple readers to the device. Two RS232
and one RS485 can be connected to the terminal, as shown in the figure below.
