Appendix a: serial port pinout, Serial port pinout, Appendix a – MultiDyne ACI-2058 User Manual
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Appendix
The ACI-2058 contains two RS-232 serial ports, each using a DB9 connector. The
connectors are compatible with standard RS-232 straight-through serial cables. The next
table describes each pin.
Appendix A
Serial Port Pinout
Appendix A
Table 4. Serial Port Pinout
Pin
Host computer
COM1
COM2
1
DCD input
DCD output
No connection
2
Receive data input
Transmit data output
Receive data input
3
Transmit data output
Receive data input
Transmit data output
4
DTR Output
Connected to pin 8
Connected to pin 8
5
Ground
Ground
Ground
6
DSR input
DSR output
No connection
7
RTS output
No connection
No connection
8
CTS input
Connected to pin 4
Connected to pin 4
9
RI input
No connection
No connection