Datalogic DS2400, Installation Manual

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INSTALLATION
25
2
2.6.2 Pass Through
Pass through mode allows two or more devices to be connected to a single external
serial interface.
Each DS2400 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 figure below:
1
2
3
Main serial interface
Auxiliary serial interface
External Trigger (for On-Line mode)
Host
DS2400
1
2 1
3
3
DS2400
LA
SE
R
ON
PW
R
/T
X
D
EX
T TR
IG
GO
O
D
RE
A
D
DS
24
0
0
LA
S
ER
O
N
PW
R
/T
X
D
E
X
T TR
IG
GO
O
D
RE
A
D
DS
24
0
0
Figure 29 - Pass through layout