Viconics VST5000 (Classic ZigBee) User Guide Bedienungsanleitung PDF herunterladen (Seite 9)

VST5000W5000W Wireless Survey Tools User Guide

Please note that this ONLY applies to the initial network

start-up. Once all the devices are online to the Niagara

database, everything will operate seamlessly even on

powerup/down&networkre-starts.

How Orphan nodes are created in the eld.

Ex.: 2 small buildings are within a few feet of each other.

Bothhave6+devices/nodes/controllereach(fig.12).

A possible cause for Building B orphan nodes is as follow:

Building A is rst stated and sets the Jace – coordinator

conguration parameters for the PAN ID and Channel.

Premises:

• BuildingAisrststated.

• Yellowdevice/node/controllerhasgivenoutits6

addresses out to other devices in building A.

• BuildingBdevices/nodes/controllerscanonlybe

connectedthroughbluedevice/nodes/controller

duetomaximumdistancecoverage.

Result:

• BecauseBluecontrollercannothaveanaddress

assigned by Yellow controller to join the network.

TheallOrangedevices/nodes/controllerscannot

join the ZigBee network either.

Getting orphan devices back on the network:

• DisconnectandbringoneofthebuildingB

device/node/controllersandpoweritupin

building A until it joins the ZigBee network

( conrmed either at the Jace – coordinator

or using the status LED on the wireless

communicationcardofthedevice/node/

controller).

• Whenthedevice/node/controllerhasjoined

the network in building A and is added to the

Niagara database, bring it back into building

B so it can propagate ZigBee addresses to the

other devices in building B.

Within Range

Jac

t t

Jace

Building A Building B

Fig. 12

5H stands for 5 hops maximum

ANYgivendevice/node/controllershouldbe

“optimized” to be NO FURTHER than 5 Hops to and from

theJace/Coordinator.Thisisduetothenatureofthe

Viconics ZigBee stack in the wireless controllers.

To properly layout the architecture and

determine the number of Jace’s required

on the job site, begin by establishing the

maximumpossiblecoverageofasingle

Jace with a wireless communication card

respectingthe5hopmaximumrule.This

can also done with the survey tools and

is covered in detail in the manual for the

survey procedures and tool usage: MAN

VWG-SURVEY-Exx.

1. Begin by positioning the Jace-coordinator centrally

in the oor space you are working in.

2. Find the coverage radius of the coordinator (VWG

or Jace-Driver) at its proposed location. It’s possible

that another location may improve your network

performance or that you may require an additional

coordinator ( VWG or Jace-Driver ) or additional

REP5000W wireless repeaters.

3. Set survey tool A at the proposed coordinator (VWG

or Jace-Driver)

4. With survey tool B, walk about the oor where a

cluster of controllers are to be found. Locate the

boundary where the signal strength is about 20%.

Thisrepresentsthemaximumradiusofthersthop

where connectivity is possible based on the building

environment and partition construction.

Please note that this distance can be anywhere from

NIL to hundreds of feet (fig. 13).

Jace

Coordinator

Proposed

location

Cluster of:

devices / nodes / controllers

Cluster of:

devices / nodes / controllers

20%

Fig. 13

1 2 3 4 5 6 7 8 9 10 11 12

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