Pass-Through - Datalogic Matrix 120 Product Reference Manual

Typical Layouts

Pass-Through

The pass-through layout allows each device to collect data from one or more
pass-through input channels and send this data plus its own on one or more dif-
ferent output channels.
In this way independent devices can be connected together in combinations to
create multi device networks. Many devices reading independently can send their
messages through a common output channel which instead of being directed at
a Host can be collected by another device on its pass-through input channel and
sent to a Host on a different output channel.

Ethernet TCP/IP Server 1

Ethernet TCP/IP Server 2

Main Serial Interface (RS232 or RS422 Full-Duplex)
Pass-through Input Channel
Output Channel
In a Pass-through layout each device supports multiple pass-through configura-
tions to accept input from different devices on different channels (i.e. middle
reader above). However, readers are not required to have a pass-through config-
uration if they don't need to receive data from an input channel (i.e. right reader
above). The overall data collection device always has at least one pass-through
configuration to collect the input data from the other devices and send it to the
Host (i.e. left reader above).
All devices always support multiple output channels (i.e. for data monitoring).
In a Pass-through layout each device can have a different operating mode: Con-
tinuous, One Shot, Phase Mode, etc.
72


Switch
Figure 54 - Pass-Through Layout
Phase
Mode
External
Trigger



Continuous
Mode
10-30 Vdc
power

Host
Matrix 120