User Manual
Table Of Contents
- NXR-ZGW/-ZRPNetLinx ZigBee Compatible Gatewayand Repeater
- Overview
- Installation
- Setting up a Network
- NXR-ZGW Browser-based Configuration Manager Pages
- Summary of Gateway Settings
- Configuration
- Personal Area Network (PAN)
- Network
- Enabling and disabling the wireless network
- Setting the PAN channel
- Security
- Access List
- Connections
- Finding a device’s EUI address
- Finding the device’s description
- Determining the device type
- Finding the amount of time a signal takes from the device to the gateway and back
- Determining the device link quality
- Checking the device link status
- PAN Device Details
- Putting a device on the Access List
- Removing a device from the Access List
- Locating the device
- Changing a Connected Device description
- Changing a device’s ZigBee networking information
- Utilities
- Device Configuration
Overview
5
NXR-ZGW/-ZRP
How ZigBee works
The NXR-ZGW, acting as a gateway, allows ZigBee-enabled devices to communicate both to and from
an ICSP master. A device connects to the NXR-ZGW and is then represented to the master as an ICSP
device. The master then communicates to the device through ICSP messages via a translation step at the
NXR-ZGW level.
The master sends "heartbeat" queries to the NXR-ZGW device; which the NXR-ZGW provides the
master with a response for all devices on the ZigBee network that have an ICSP address and use ZigBee
as their primary interface to the master. The response provided by the NXR-ZGW is based on the last
known status of the ZigBee-enabled device. If the NXR-ZGW determines it is no longer in
communication with a device, it will indicate to the master the device is non-responsive or has left the
network.
Security
The NXR-ZGW device provides two levels of security, Security Level 0 and Security Level 5. Security
Level 0 provides no security and no encryption, Security Level 5 provides 32-bit Message Integrity Code
(MIC). The NXR-ZGW can be configured to permit both Security Level 0 and Security Level 5 devices
or only Security Level 5 devices into the network. When enabled, security is network wide.
The NXR-ZGW can also allow or deny devices to join the network based on the device’s 64-bit extended
unique identifier (EUI-64) via a EUI-64 filter. The EUI-64 filter is a list of devices allowed on the
network. When enabled, the EUI-64 number must be on the list for the device to enter the network. After
enabling the filter, any device not on the list is instructed to leave the network.
Network structure
The ZigBee network is a Personal Area Network (PAN) consisting of 1 gateway, optionally 1 or more
repeaters, and end devices.
A gateway initiates a ZigBee network and all devices linked to the PAN gateway do so through either
direct links or through repeaters. It is the job of the gateway to establish the network’s parameters, e.g.,
channel and PAN ID. Within each PAN, a gateway or repeater can have 20 end devices and 4 repeaters.
Each connection supports a depth of 5 devices. The topology information is contained in the system Web
page.
Repeaters like the NXR-ZRP are used to expand the coverage of gateway NXR-ZGWs. Every device in
the PAN has a parent, and repeaters can have children. Adding repeater devices to a network can reduce
the number of hops an end device needs to make to reach the gateway while extending the coverage area
for the entire network. Any device attached to a repeater NXR-ZRP appears attached to the gateway
NXR-ZGW in the system web page.
Devices will always connect to a repeater or gateway with the least depth and then best quality. End
devices cannot have children. The use of the NXR-ZGW and NXR-ZRP’s allow ZigBee-type devices to
roam seamlessly from repeater to repeater within the same PAN ID.
Mobile end devices tend to sleep frequently and thus enter and leave the network regularly. Upon
awakening, the end device may be in a new physical location or the network may have changed channels.
The end device will seamlessly search for a new parent and scan channels upon awakening.