ALTERNATIVE LAYOUTS
133
A
PASS THROUGH
When Pass Through is activated on the Auxiliary interface, the DS6400 reader can be
integrated in a network consisting of different scanners not provided with a Lonworks
interface.
This connection mode allows two or more devices to be connected to a single external serial
interface. The DS6400 transmits the messages received by its auxiliary interface onto its
main interface. The received data is transmitted "as is", (passed-through), and therefore any
data formatting requirements must be made at each individual reader.
In this configuration a series of scanners can be connected together using RS232 on the
main interface and all messages will be passed through this chain to the host. The reading
phase of each scanner is independent from the others. In Pass Through connections each
scanner is provided with its relative External Trigger (multi P.S.).
Applications can be implemented to connect a device such as a hand-held reader to the
Auxiliary port for manual code reading capability.
For the RS232 connections the maximum cable length is 15 m (50 ft).
The scanners represented in the following figures are configured in Pass Through mode.
1
2
Main Serial Interface
Auxiliary Serial Interface
* P.S. (Presence Sensor) connected to Input 1 (External Trigger/PS) input.
Figure 138
– Pass Through Connection for DS6400 Master/Slave Models
P.S.*
P.S.*
DS6400
CBX100
Gryphon
Local Host
Power
DS4800
1
2
1
1
2
CAB-Sxx
I/O, AUX
P.S.*
Summary of Contents for DS6400
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