Kontron CP-RIO6-923 - Manual (Page 25)

Hardware Description
11 CP-RIO6-923 User Guide
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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:
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
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
RJ45 Female
RJ45 Pin
Number
Signal Connected Description
DB9 Pin
Number
DB9 Female
Front View
1 RTS Y Request To Send 8
Front View
2 DTR Y Data Terminal Ready 76
3 TXD Y Transmit 2
4 GND N Ground -
5 GND Y Ground 5
6 RXD Y Receive 3
7 DSR Y Data Set Ready 4
8 CTS N Clear To Send 7
- RI N
Ring Indicator (Not
Used)
9
- DCD N
Carrier Detect (Not
Used)
1