Axis P1465-LE-3 - Page 58

AXISP1465-LE-3LicensePlateVerifierKit
Thedeviceinterface
MQTT
MQTT(MessageQueuingTelemetryTransport)isastandardmessagingprotocolfortheInternetofThings(IoT).Itwasdesignedfor
simpliedIoTintegrationandisusedinawidevarietyofindustriestoconnectremotedeviceswithasmallcodefootprintand
minimalnetworkbandwidth.TheMQTTclientinAxisdevicermwarecansimplifyintegrationofdataandeventsproducedinthe
devicetosystemswhicharenotvideomanagementsystems(VMS).
SetupthedeviceasanMQTTclient.MQTTcommunicationisbasedontwoentities,theclientsandthebroker.Theclientscan
sendandreceivemessages.Thebrokerisresponsibleforroutingmessagesbetweenclients.
YoucanlearnmoreaboutMQTTinAXISOSPortal.
MQTTclient
Connect:TurnonorofftheMQTTclient.
Status:ShowsthecurrentstatusoftheMQTTclient.
Broker
Host:EnterthehostnameorIPaddressoftheMQTTserver.
Protocol:Selectwhichprotocoltouse.
Port:Entertheportnumber.
•1883isthedefaultvalueforMQTToverTCP
•8883isthedefaultvalueforMQTToverSSL
•80isthedefaultvalueforMQTToverWebSocket
•443isthedefaultvalueforMQTToverWebSocketSecure
Username:Entertheusernamethattheclientwillusetoaccesstheserver.
Password:Enterapasswordfortheusername.
ClientID:EnteraclientID.Theclientidentierissenttotheserverwhentheclientconnectstoit.
Cleansession:Controlsthebehavioratconnectionanddisconnectiontime.Whenselected,thestateinformationisdiscarded
atconnectanddisconnect.
Keepaliveinterval:Thekeepaliveintervalenablestheclienttodetectwhentheserverisnolongeravailablewithouthaving
towaitforthelongTCP/IPtimeout.
Timeout:Thetimeintervalinsecondstoallowaconnecttocomplete.Defaultvalue:60
Devicetopicprex:UsedinthedefaultvaluesforthetopicintheconnectmessageandLWTmessageontheMQTTclienttab,
andinthepublicationconditionsontheMQTTpublicationtab.
Reconnectautomatically:Specieswhethertheclientshouldreconnectautomaticallyafteradisconnect.
Connectmessage
Speciesifamessageshouldbesentoutwhenaconnectionisestablished.
Sendmessage:Turnontosendmessages.
Usedefault:Turnofftoenteryourowndefaultmessage.
Topic:Enterthetopicforthedefaultmessage.
Payload:Enterthecontentforthedefaultmessage.
Retain:SelecttokeepthestateofclientonthisTopic
QoS:ChangetheQoSlayerforthepacketow.
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