Dfi EC300 Series Manual de usuario Pagina 92

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92
5
Ports and Connectors
COM Port
COM 1 and COM 2 are xed at RS232.
COM 1’s pin de nition will vary according to its jumper setting. Refer to “COM 1
RS232/RS422/RS485 Select” in this chapter for more information.
The serial ports are asynchronous communication ports with 16C550A-compatible
UARTs that can be used with modems, serial printers, remote display terminals,
and other serial devices.
COM 1 / COM 2
DCD
TXD
RXD
DTR
GND
12345
689
7
DSR
CTS
RTS
RI
RX+
TX+
RX-
TX-
GND
12345
689
7
N.C.
N.C.
N.C.
N.C.
DATA+
N.C.
DATA-
N.C.
GND
12345
689
7
N.C.
N.C.
N.C.
N.C.
RS232
RS422
Full Duplex
RS485
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