Advantech LGA 1700 User Manual page 27

2.3.1.1 COM Connector
MIC-770 V3 provides two 9-pin D-sub connectors and offers RS-232/422/485 serial
communication interface ports. The default setting is ES-232, but this can be modified
in the BIOS settings. You can find detailed instructions in Chapter 3.
Note! Expandable for four more optional RS-232 cables.
Table 2.2: COM Connector Pin Assignments
RS-232
Pin Signal Name
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Note! NC represents "No Connection".
RS-422
Signal Name
Tx-
Tx+
Rx+
Rx-
GND
NC
NC
NC
NC
13
RS-485
Signal Name
DATA-
DATA+
NC
NC
GND
NC
NC
NC
NC
MIC-770 V3 User Manual