Themis RES-12DCX, Installation Manual

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A-3
Themis Computer
Connector Pinouts
Serial Port
A.3 Serial Port
The RES-12DCX supports one male DB9 serial port connector on the rear I/O Panel
(see Figure A-2 )—COM 1 (TTYA)—and a second—COM 2 (TTYB)—directly
from a header on the motherboard.
COM 1 and COM 2 connector-pin signals are described in Table A-3 .
Figure A-2. COM 1/COM 2 Serial Port Connector Pinout
Symbol
JCOM1 (Rear I/O Panel)
JCOM2 Header (Motherboard)
1 2 3 4 5
6 7 8 9
COM 1
COM 2
Table A-3.
COM 1/COM 2 Serial Port Pinout Signal Descriptions
Pin
Signal
Name
Signal Definition Pin
Signal
Name
Signal Definition
1 DCD Data Carrier Detect 6 DSR Data Set Ready
2 RXD Receive Data 7 RTS Request To Send
3 TXD Transmit Data 8 CTS Clear To Send
4 DTR Data Terminal Ready 9 RI Ring Indicator
5 GND Signal Ground