![FabiaTech PC104 User Manual Download Page 22](http://html.mh-extra.com/html/fabiatech/pc104/pc104_user-manual_536442022.webp)
FabiaTech Corporation
17
CN2 & CN3: Serial Port Connectors RS-232C Pin Definitions
CN3 (COM1) & CN2 (COM2) are 10-pin 2.0mm IDC connectors. The included
serial port adapter cables are used to transfer 10-pin 2.0mm IDC into standard DB-
9 connector. The serial port 2 is designed for multiple proposes. Use JP2 selects the
RS-232 or RS-485, and JP4 provides terminator select of RS-485 mode. The
following tables show the signal connections of these connectors and the
included adapter cable for CN2 & CN3:
CN3
Signal
CN2
RS485 DB9
1 -DCD2 1 1
2 -DSR2 2 6
3 RXD2 3
485-
2
4 -RTS2 4 7
5 TXD2 5
485+
3
6 -CTS2 6 8
7 -DTR2 7 4
8 -RI2 8 9
9 GROUND 9 5
10 CASE
GROUND
10
Shield
CN2
2
1
9
10
DB9
5
6
9
1
1
9
10
2
CN3
RS-232
Factory Preset
3 2 1
3 2 1
JP2
RS-485
3 2 1
3 2 1
JP4
Pin 2,3 Close:
Terminator
Disable
Default
Pin 1,2 Close:
Terminator
Enabled
Summary of Contents for PC104
Page 5: ...v ...
Page 11: ...FabiaTech Corporation 6 ...
Page 25: ...FabiaTech Corporation 20 ...
Page 29: ...FabiaTech Corporation 24 ...
Page 55: ...FabiaTech Corporation 50 ...