Omega Vehicle Security 1400 Manuel D’Utilisation
3-8
ChartScan User’s Manual
Serial Port Pin Connectors
An optional CA-47 cable (or equivalent) connects ChartScan to the computer. The ChartScan side of the cable has a
male DB9 connector for use with the RS-232/422 serial port. The cable’s computer side has 2 connectors: one for
DB9, and the other for DB25. Other crossover-type cables can be used if wired as shown in the figure. The
following table lists the RS-232 and RS-422 pin connections for a DB9.
male DB9 connector for use with the RS-232/422 serial port. The cable’s computer side has 2 connectors: one for
DB9, and the other for DB25. Other crossover-type cables can be used if wired as shown in the figure. The
following table lists the RS-232 and RS-422 pin connections for a DB9.
Pin #
RS-232
Pin Description
Pin Description
Signal
1
No connection
N/A
2
Receive Data (RxD-)
Input
3
Transmit Data (TxD-)
Output
4
No connection
N/A
5
Ground
Ground
6
No connection
N/A
7
Request to send (RTS-)
Output
8
Clear to send (CTS-)
Input
DB9
2
7 8
3 5
DB25
2
7
3
5
4
Computer NetScan
DB9
RXD 2
TXD 3
TXD 3
GND 5
RTS 7
CTS 8
CTS 8
3 TXD
2 RXD
5 GND
8 CTS
7 RTS
DB9
DB25
Computer NetScan
TXD 2
RXD 3
RXD 3
GND 7
CTS 5
RTS 4
3 TXD
2 RXD
5 GND
8 CTS
7 RTS
DB9
Interface Wiring Diagram
9
No connection
N/A
ChartScan to PC Connection
(RS-232)
DB9 Male
Pin & Signal
Cable
Wiring
DB9 Female
Pin & Signal
2
RxD-
⇐
⇐
⇐
⇐
3
TxD-
3
TxD-
⇒
⇒
⇒
⇒
2
RxD-
5
GND
⇔
⇔
⇔
⇔
5
GND
7
RTS-
⇒
⇒
⇒
⇒
8
CTS-
8
CTS-
⇐
⇐
⇐
⇐
7
RTS-
ChartScan Connection
(RS-422)
DB9 Male
Pin & Signal
Cable Wiring
1
RxD+
⇐
⇐
⇐
⇐
2
RxD-
⇐
⇐
⇐
⇐
3
TxD-
⇒
⇒
⇒
⇒
4
TxD+
⇒
⇒
⇒
⇒
5
GND
⇔
⇔
⇔
⇔
6
RTS+
⇒
⇒
⇒
⇒
7
RTS-
⇒
⇒
⇒
⇒
8
CTS-
⇐
⇐
⇐
⇐
9
CTS+
⇐
⇐
⇐
⇐