Manual

CP-RIO3-05 Functional Description

ID 1044-0711, Rev. 1.0 Page 2 - 7

P R E L I M I N A R Y

The following figure and tables provide pinout information for the onboard COM connectors J2

and J3.

Figure 2-5: Onboard Serial Port Connectors J2 (COM1) and J3 (COM2)

Table 2-5: D-Sub COM Connector J3a (COM2) Pinout

RS-232

RS-422

I/O DESCRIPTION SIGNAL SIGNAL DESCRIPTION I/O

-- Not connected NC 1 NC Not connected --

I Receive data RXD 2 RXD+ Receive data + I

O Transmit data TXD 3 TXD- Transmit data - O

-- Not connected NC 4 NC Not connected --

-- Signal ground GND 5 GND Signal ground --

-- Not connected NC 6 NC Not connected --

O Request to send RTS 7 TXD+ Transmit data + O

I Clear to send CTS 8 RXD- Receive data - I

-- Not connected NC 9 NC Not connected --

Note ...

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

connector.

COM2

COM1