CP-RIO3-04 Rear I/O
CP3002
Page B - 10
ID 1042-9252, Rev. 2.0
P R E L I M I N A R Y
B.5.4
COM Interface
The CP-RIO3-04 rear I/O module provides two identical COM ports for connecting RS-232 de-
vices to the CP-RIO3-04 rear I/O module.
On the 8HP version, the onboard 10-pin COM connectors J2 and J3 are routed to the 9-pin
D-Sub COM connectors J2a and J3a located on the front panel.
On the 4HP version, the COM signals are available only on the onboard 10-pin COM
connectors J2 and J3.
The following figure and table provide pinout information for the 9-pin D-Sub COM connectors
J2a and J3a located on the front panel of the 8HP version.
The following figure and table provide pinout information for the onboard serial port connectors
J2 and J3.
Figure B-7: COM Connectors J2a (COMA)
and J3a (COMB)
J3a
J2a
6
9
5
1
6
9
5
1
Table B-5: COM Connectors J2a (COMA)
and J3a (COMB) Pinout
PIN
SIGNAL
DESCRIPTION
I/O
1
DCD
Data carrier detect
I
2
RXD
Receive data
I
3
TXD
Transmit data
O
4
DTR
Data terminal ready
O
5
GND
Signal ground
--
6
DSR
Data send request
I
7
RTS
Request to send
O
8
CTS
Clear to send
I
9
RI
Ring indicator
I
Figure B-8: Serial Port Connectors
J2 (COMA) and J3 (COMB)
J2
J3
1
9
10
2
1
9
10
2
Table B-6: Serial Port Con. J2 (COMA)
and J3 (COMB) 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
--
