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DATALOGIC
2.6.3 RS232 Master/Slave
The RS232 master/slave connection is used to collect data from several
scanners to build either an omni-directional or a multi-sided reading system;
there can be one master and up to 9 slaves connected together.
The Slave scanners use RS232 only on the main and auxiliary serial
interfaces. Each slave DS4300 transmits the messages received by the
auxiliary interface onto the main interface. All messages will be passed
through this chain to the Master.
The Master scanner is connected to the Host on the main serial interface.
The possible main interface types for the Master scanner are RS232 or
RS485. (20 mA C.L. can also be used if the INT-24 accessory is installed).
Either On-Line or Serial On-Line Operating modes can be used in this layout.
When On-Line Operating mode is used, the external trigger signal is
unique to the system however it is not necessary to bring the external
trigger signal to the Slave scanners.
The main and auxiliary ports are connected as shown in the figure below.
DS4300
Slave
1
1
2
3
1
DS4300 Slave
2
Main serial interface
Auxiliary serial interface
External Trigger (for On-Line mode)
Figure 2.30 - RS232 Master/Slave layout
2
DS4300
Master
3
Host
DS4300
1
Installation - 2.23
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