Local Echo; Pass Through - PSC LazerData 12000 Series Installation Manual

Fixed-position unattended bar code readers
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LazerData
12000 Scanner

2.9.2 Local echo

In local echo mode, data is transmitted on the auxiliary interface as well as on the
main interface. Host Mode programming can be accomplished either through the
main interface or the auxiliary interface in local echo mode.
Host
1

2.9.3 Pass through

Pass through mode allows two or more devices to be connected to a single external
serial interface.
Each LazerData 12000 Scanner transmits the messages received by the auxiliary
interface onto the main interface.
All messages will be passed through this chain to the host. The main and auxiliary
ports are connected as shown in the figure below:
1
Host
2.28 - Installation
Terminal
12000 Scanner
2
1
2
3
3
Figure 2.35 - Local echo layout
12000 Scanner
2
3
Main serial interface
1
2
Auxiliary serial interface
3
Presence sensor
Figure 2.36 - Pass through layout
Installation Manual
Main serial interface
Auxiliary serial interface
Presence sensor
12000 Scanner
1
3

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