4.1.2.3 for the selection of setting RS-232/422/485 by BIOS of
COM1 and COM2 ports.
System Description
Signal Name
PIN
RS-232
1
DCD#
2
RXD#
3
TXD#
4
DTR#
5
GND
6
DSR#
7
RTS#
8
CTS#
9
RI#
Matrix MXC-4000 Series
User's Manual
RS-422
RS-485
TXD422-
485DATA-
TXD422+
485DATA+
RXD422+
RXD422-
21
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