
18
3.1.3
COM2 Port Connector
The COM2 port is a D-sub 9-pin connector supporting RS-232/
422/485 modes by BIOS setting.
Figure 3-5: COM2 Port Pin Definition
Table 3-4: COM2 Port Pin Definition
Pin
Signal
RS-232
RS-422
RS-485
1
COM2_DCD-L_CN
DCD#
TXD422- 485DATA-
2
COM2_RXD_CN
RXD
3
COM2_TXD_CN
TXD
N/S
4
COM2_DTR-L_CN
DTR#
RXD422-
N/S
5
GND
GND
N/S
N/S
6
COM2_DSR-L_CN
DSR#
N/S
N/S
7
COM2_RTS-L_CN
RTS#
N/S
N/S
8
COM2_CTS-L_CN
CTS#
N/S
N/S
9
COM2_RI-L_CN
RI#
N/S
N/S
1
5
6
9
Содержание STC2-10WP-AL
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