Digi TransPort - Page 32

TransPort WR21 hardware
Digi TransPort User Guide 32
TransPort WR21 serial pinout
RS-232 pinout
WWAN
SECONDARY
SERIAL 0
9-30VDC
2A MAX
WWAN
PRIMARY
LAN 1LAN 0
SERIAL 0
Pin 1
Pin 9
Pin # Direction RS232 DCE Description
1 Out DCD Data Carrier Detect
2 Out RXD Receive Data
3In TXD Transmit Data
4In DTR Data Terminal Ready
5N/A GND Ground
6 Out DSR Data Set Ready
7In RTS Ready To Send
8Out CTS Clear To Send
9 Out RI Ring Indicate