Figure 2.8:Com3 ~ Com6 Connector; Com7 Connector; Figure 2.9:Com7 Connector; Table 2.7:Com 7 Serial Port Pin Assignments - Advantech ARK-3381 User Manual

Figure 2.8: COM3 ~ COM6 connector
Table 2.6: COM 3~COM 6 Serial port 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"

2.3.4 COM7 Connector

The ARK-3381 provides a D-sub 9-pin connector, which offers one RS-
232 serial communication interface port of COM7; it comes with func-
tions of Rx and Tx only but without handshaking. Please refer to section
3.8 "Jumper Settings" and Chapter 6 "Full Disassembly Procedure" set up
information.
Table 2.7: COM 7 Serial port pin assignments
Pin
1
1 2 3
6 7 8
RS-422
Signal Name
Rx-
Rx+
Tx+
Tx-
GND
NC
NC
NC
NC
1 2 3
6 7 8
Figure 2.9: COM7 Connector
RS-232
Signal Name
DCD (optional)
13
4 5
9
RS-485
Signal Name
NC
NC
DATA+
DATA-
GND
NC
NC
NC
NC
4 5
9
Chapter 2