$thing/up/status/{productKey}/{deviceCode}$thing/down/status/{productKey}/{deviceCode}需要主动请求设备上报的时候用以上方式请求TOPIC
$thing/down/status/{productKey}/{deviceCode}$thing/up/status/{productKey}/{deviceCode}当通过云端控制设备时,设备需要订阅下发TOPIC接收云端指令
$thing/down/status/{productKey}/{deviceCode}$thing/up/status/{productKey}/{deviceCode}$thing/up/event/{productKey}/{deviceCode}$thing/down/event/{productKey}/{deviceCode}当云端调用设备的某个指令调用时,默认TOPIC
$thing/down/command/{productKey}/{deviceCode}$thing/up/command/{productKey}/{deviceCode}