Banner SureCross DX80 Wireless Networks - Manual (Page 5)

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Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
DX80
Reference Guide
Network Basics
Device ID
To route communication between devices, device identification numbers are
assigned to each device in a network .
In the SureCross system, device 0 is always the master device, the Gateway. All
other nodes are assigned device identification numbers from 1 through 15 . Even
when all 15 nodes are not installed, the TDMA frame remains established for
15 nodes and the send and receive frames for those nodes are unused . Larger
networks may be set up with up to 128 nodes, establishing a much longer TDMA
frame .
Basic Wireless Network
In the most basic wireless network, input devices are wired to inputs on DX80
devices . The data created by the input device is transmitted to the specified output
on another device . A device wired to that output performs a task based on the
received data .
The simple wireless network shown illustrates a very basic wireless network
containing only two Node devices and a Gateway . More complicated wireless
networks might include multiple input and output devices wired to each Node and
several Nodes installed in the network .
In our simple example, the sensor wired to device 1 is an input device connected to
Node 1’s input . Data is transmitted to Node 2 and a device connected to Node 2’s
output performs a task - in this case the light turns on .
This standard wireless system with I/O is a simple network with no interfaces
to the outside world other than the I/O . To bridge the gap between the wireless
network and the outside world, the Gateway also functions as a Modbus 485 slave,
interfacing between two networks: the wireless network and a Modbus 485 network.
Simple Wireless Network
Device ID 1
Gateway
(Wireless Master Device)
Device ID 0
Device ID 2