Banner SureCross DX80 Series Manual page 14

This concept can be expanded by chaining independent data radio connections through the serial interface. Very large networks can be
created without complex network addressing. Modbus networks can be extended while still maintaining the determinism and latency of the
underlying DX80 I/O networks.
Node
NID 1
This figure is similar to the previous example,
but extends the concept. Notice how the serial
line exits the lower left data radio (operating
on NID A) and connects to another data radio,
this one operating on Network ID B. The data
radio on NID B transmits data down to another
cluster of DX80s that are using NID 3 to
communicate their I/O.
In this configuration, the devices using NID 3
could be twice as far from the Modbus host
in the PC as the range of a single pair of data
radios, illustrating it is possible to implement
a multi-hop network as easily as changing the
Network ID on the second pair of data radios.
Use this configuration when the distance
between the source and ultimate destination
exceeds the distance the range of a single hop
for the data radios.
Banner Engineering Corp. • Minneapolis, MN U.S.A
www.bannerengineering.com • Tel: 763.544.3164
Modbus
Master
Data Radio
NID A
Gateway
NID 1
Node
NID 1
Data Radio
NID B
SureCross™ FlexPower™ Data Radio
Data Radio
NID A
Data Radio
NID B
Gateway
NID 3
Node
NID 3
Data Radio
NID A
Gateway
NID 2
Node
NID 2
Node
NID 2
Node
NID 3
P/N 132031 rev. E
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