Advantech MIC-7500, User Manual

Page: 20 / 91

MIC-7500 User Manual 10
2.3 Connectors
2.3.1 MIC-7500 External I/O Connectors
Figure 2.1 MIC-7500 Front View
2.3.1.1 COM connector
MIC-7500 provides four 9-pin D-sub connectors, two of which offer RS-232/422/485
and the other two offer RS-232 serial communication interface ports. Default setting is
RS-232, but this can be modified by BIOS setting. You can find detailed setting meth-
ods in Chapter 3.
USB 3.0 LAN1/2 COM 1/2
CFast Socket Power 9 -36VDC
Line-out
Mic-in
COM 3/4
DVI VGA
COM1
TX/RX
COM2
TX/RX
Table 2.2: COM Connector Pin Assignments
RS-232 RS-422 RS-485
Pin Signal Name Signal Name Signal Name
1 DCD Tx- DATA-
2 RxD Tx+ DATA+
3 TxD Rx+ NC
4 DTR Rx- NC
5 GND GND GND
6 DSR NC NC
7 RTS NC NC
8 CTS NC NC
9 RI NC NC
Note! NC represents “No Connection”.