Network Id; Device Id; Basic Wireless Network - Banner Sure Cross DX80 Instruction Manual

Network basics

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Sure Cross

DX80 Network Basics

2.1 Network ID

Because the radio network operates over the air, there are limited ways to electrically separate collocated networks. To

keep collocated networks separated, Banner uses a network ID number, sometimes abbreviated as NID. Each wireless

network operating within radio range is assigned a unique network ID number.

All devices within a network are assigned the same network identification number, which defines a unique frequency hop

table. Because networks 1 and 2 use a different sequence of frequency changes, they are not on the same frequency at the

same time. This prevents communication between the networks even when they share the same transmission medium.

To route communication between devices, device identification numbers are assigned to each device in a network.

In the Sure Cross

Performance network, device 0 is always the master device, the Gateway. The Nodes are assigned

device identification numbers from 1 through 47. If not all 47 Nodes are installed, the TDMA frame can be resized to

improve network speed.

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 Nodes 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, a sensor wired to Node 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, for example, turning on a light.

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.

Node 02

Node 01

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Gateway

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