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3.2 Serial RS232 Interface
The CP-RIO6-923 provides a serial RS232 interface via an RJ45 connector. It is labelled "COM" on the front
plate. This connector is provided on the dual-slot as well as on the single-slot variant. It has the following
pinning:
Table 3-3:
RS232 Pin Assignment
Signal
Pin
N.C.
1
N.C.
2
TXD
3
GND
4
GND
5
RXD
6
N.C.
7
N.C.
8
External connection is established with a straight through Ethernet cable and a RJ45 (female) to SubD
(female) adapter if required. The adapter is described in the following table.
Table 3-4:
Serial console terminal cable interface: RJ45 Female to DB9 Female
RJ45 Pin
RJ45 Female
Number
1
2
3
4
5
6
7
8
Front View
-
-
Signal
Connected
RTS
Y
Request To Send
DTR
Y
Data Terminal Ready
TXD
Y
Transmit
GND
N
Ground
GND
Y
Ground
RXD
Y
Receive
DSR
Y
Data Set Ready
CTS
N
Clear To Send
Ring Indicator (Not
RI
N
Used)
Carrier Detect (Not
DCD
N
Used)
11
DB9 Pin
Description
Number
8
76
2
-
5
3
4
7
9
1
www.kontron.com
Hardware Description
DB9 Female
Front View
CP-RIO6-923 User Guide
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