Manual

Functional Description CP-RIO3-05

Page 2 - 8 ID 1044-0711, Rev. 1.0

P R E L I M I N A R Y

Table 2-6: Onboard Serial Port Connector J2 (COM1) Pinout

PIN SIGNAL DESCRIPTION I/O

1 DCD Data carrier detect I

2 DSR Data send request I

3 RXD Receive data I

4 RTS Request to send O

5 TXD Transmit data O

6 CTS Clear to send I

7 DTR Data terminal ready O

8 RI Ring indicator I

9 GND Signal ground --

10 NC Not connected --

Table 2-7: Onboard Serial Port Connector J3 (COM2) Pinout

RS-232

RS-422

I/O DESCRIPTION SIGNAL SIGNAL DESCRIPTION I/O

-- Not connected NC 1 NC Not connected --

-- Not connected NC 2 NC Not connected --

I Receive data RXD 3 RXD+ Receive data + I

O Request to send RTS 4 TXD+ Transmit data + O

O Transmit data TXD 5 TXD- Transmit data - O

I Clear to send CTS 6 RXD- Receive data - I

-- Not connected NC 7 NC Not connected --

-- Not connected NC 8 NC Not connected --

-- Signal ground GND 9 GND Signal ground --

-- Not connected NC 10 NC Not connected --

Note ...

The RS-232 signals DCD, DTR, DSR, and RI are not supported on the J3

connector.