16 Introduction
1.7.1 DB-62P COM Port and Digital I/O Connector
4 COM ports and 8-channel isolated digital input and 8-channel
isolated digital output are provided by the DB-62P connector with
the included cable, terminating in four D-SUB 9-pin connectors
and one 26-pin digital I/O connector. COM1 and COM2 ports
selectively support RS-232/ RS-422/ RS-485 according to BIOS
setting. Residual COM3 and COM4 ports support only RS-232
function.
Figure 1-9: DB-62P COM Port
Pin Signal Pin Signal Pin Signal
1 COM3_TXD 22 N/C 43 N/C
2 COM3_DTR# 23 COM3_DSR# 44 COM3_RTS#
3 COM3_RI# 24 COM3_DCD# 45 GND
4 COM4_TXD 25 COM4_RXD 46 COM4_CTS#
5 COM4_DTR# 26 COM4_DSR# 47 COM4_RTS#
6 COM4_RI# 27 COM4_DCD# 48 GND
7 COM1_TXD 28 COM1_RXD 49 COM1_CTS#
8 COM1_DTR# 29 COM1_DSR# 50 COM1_RTS#
9 COM1_RI# 30 COM1_DCD# 51 GND
10 COM2_TXD 31 COM2_RXD 52 COM2_CTS#
21
43
22
1
42
62
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