22
IB918F User’s Manual
2.5.3
COM1 RS-232/422/485 Ports (CN2)
COM1
RS-232/422/485 ports are jumper-less and configurable in BIOS.
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
RXD
TX+
Data+
3
TXD
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
Содержание IB918F
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