Quatech RS-485 - Manual (Page 17)

16
A A p p p p e e n n d d i i x x A A
Pin outs and Connector
□
□ □ DC Power outlet
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□ □ RS-232 Pin Assignment
The pin assignment scheme for a 9-pin male connector on a DTE is given
below.
PIN 1 : NC PIN 2 : TXD PIN 3 : RXD PIN 4 : DSR
PIN 5 : GND PIN 6 : DTR
PIN 7 : CTS PIN 8 : RTS
PIN 9 : Power ( optional )
□ □ □ RS-232 Wiring Diagram
Serial Device This Bluetooth adapter
2 RX 3 TX
3 TX 2 RX
5 GND 5 GND
4 DTR 6 DSR
6 DSR 4 DTR
(Flow Control)
(Flow Control)