DS2100
22
2
2.5.2 Pass-Through
Pass-through mode allows two or more devices to be connected to a single external
serial interface.
Each DS2100 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:
1
2
3
Main serial interface
Auxiliary serial interface
External Trigger (for On-Line mode)
Host
DS2100
1
2
1
3
3
DS2100
Figure 23 – Pass-through layout
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