Omega Vehicle Security OMB-NETSCAN 1500 User Manual Page 126

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7-8 NetScan Users Manual
Configuration Settings on Rear Panel DIP Switch
Micro- Label Setting Description
switch
#
1
COMM SELECT 0 Selects serial communication
1 Not applicable to NetScan
2,3
HANDSHAKE (H/S)
1
00 No Handshake
01
Software Handshake only
2
(XON/XOFF)
10 Hardware Handshake only
(RTS/CTS)
11 Both Hardware/ Software
Handshake
4,5
PARITY 00 No Parity
01 Odd Parity
10 Even Parity
11 (N/A)
6,7,8
SERIAL BAUD RATE 000 300 baud
001 600 baud
010 1200 baud
011 2400 baud
100 4800 baud
101 9600 baud
1
110 19200 baud
1
111 (N/A)
9
RS-232 0 Selects RS-232 Serial
RS-422 1 Selects RS-422 Serial
Note 1:
At 9600 and 19200 baud rates, Handshake should be set for Hardware Handshake
only, 10.
Note 2:
ChartView software will not run when Handshake is set for Software Handshake
only, 01.
Serial Port Pin Connectors
NetScan is equipped with two DB9 connectors, both located on the rear panel. The DB9
connector labeled CONFIG is for ethernet configuration only. The DB9 connector labeled
RS-232/422 is for serial interface applications. The serial port default is for the RS-232
connector configured as DTE (Data Terminal Equipment) for an IBM AT at RS-232 levels.
An optional CA-47 cable (or equivalent) connects the NetScan with the computer. The NetScan side of the cable has
a male DB9 connector for use with the RS-232/422 serial port. The cables 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
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
35
DB25
2
73
5
4
Computer NetScan
DB9
RXD 2
TXD 3
GND 5
RTS 7
CTS 8
3 TXD
2 RXD
5 GND
8 CTS
7 RTS
DB9
DB25
Computer NetS can
TXD 2
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
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