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Barcode Scanner VB12
Installation
The master scanner is also connected to the host on the RS 232 auxiliary serial
interface.
The external trigger signal is unique to the system; there is a single reading phase and
a single message from the master scanner to the host computer.
It is necessary to bring the external trigger signal to all the scanners.
The main and auxiliary ports are connected as shown in the following figure.
1 Auxiliary serial interface
2 RS 485 main serial interface
3 External trigger
Slave
1
Figure 5.19
RS 485 master/slave layout
The auxiliary serial port of the slave scanners can be used in local echo
communication mode to control any single scanner (visualise collected
data) or to configure it using the VisoSetup utility or host mode
programming procedure
The termination resistors of the RS 485 bus must not be installed.
Subject to reasonable modifications due to technical advances.
20
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
1
VB12
Slave
3
1
Host
2
Master
Copyright Pepperl+Fuchs, Printed in Germany
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