![background image](http://html1.mh-extra.com/html/ibase-technology/umt-7211/umt-7211_user-manual_605091019.webp)
Hardware Configuration
UMT-7211 User Manual
11
2
2.2 Pin out for COM1 & COM2
COM1 RS232/422/485 Port
COM 1 features jumperless selection for RS-232/422/485, which is
configurable in the BIOS setting.
Pin
Signal Name
Pin
Signal Name
1
DCD, Data carrier detect
6
DSR, Data set ready
2
RXD, Receive data
7
RTS, Request to send
3
TXD, Transmit data
8
CTS, Clear to send
4
DTR, Data terminal ready
9
RI, Ring indicator
5 Ground
Pin
Signal Name
RS-232
RS-422
RS-485
1 DCD
TX-
DATA-
2 RX
TX+ DATA+
3 TX
RX+
NC
4 DTR
RX-
NC
5 Ground
Ground
Ground
6 DSR
NC
NC
7 RTS
NC
NC
8 CTS
NC
NC
9 RI
NC
NC
1
6
5
9