
Barcode Scanner VB14A
INSTALLATION
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
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
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6.5.2
Pass-Through
Pass-through mode allows two or more devices to be connected to a single external
serial interface.
Each VB14A transmits the messages received by the Auxiliary interface onto the
main interface. All messages will be passed through this chain to the host.
When On-Line Operating mode is used, the scanner is activated by an External
Trigger (photoelectric sensor) when the object enters its reading zone.
The Main and Auxiliary ports are connected as shown in the following figure:
Figure 6.22
Pass-through layout
VB14A
1
2
1
3
3
VB14A
VB14A
VB14A
Host
1 Main serial interface
2 Auxiliary serial interface
3 External Trigger (for On-Line mode)