Serial com ports (com1, com2) – ADLINK AmITX-BT-I User Manual
Page 18
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Page 18
AmITX-BT-I
4.1.2. Serial COM Ports (COM1, COM2)
COM1: Supports RS-232/422/485
COM2: Supports RS-232 only
Pin #
RS-232
RS-422
RS-485
1
DCD, Data Carrier Detect
TX-
RTX-
2
RXD, Receive Data
TX+
RTX+
3
TXD, Transmit Data
RX+
N/A
4
DTR, Data Terminal Ready
RX-
N/A
5 GND
N/A
N/A
6
DSR, Data Set Ready
N/A
N/A
7
RTS, Request To Send
N/A
N/A
8
CTS, Clear To Send
N/A
N/A
9 RI,
Ring
Indicator
N/A
N/A
SW14: Switch for mode selection of COM1 (default RS-232).
SW14
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