命令下发_物联网平台_边缘计算网关

概述

【命令下发】节点可以很快速的选择对应的设备，直接从平台接收构成的命令，并用于下一步操作。在平台中，【命令下发】节点输出的内容，常常用于二次辨析后重构成与腾龙一体机连接的具体设备能够识别的指令。

【命令下发】节点的命令内容可能来自【直连设备】【网关设备】【网关子设备】三种不同的设备，其中来自于【网关子设备】的命令信息是经由与其连接的网关下达的，因此信息中会附带该【网关子设备】的设备编号。

注意：【命令下发】节点的功能中具备单向命令和双向命令两种模式，单项命令表示平台直接向指定设备下达命令，不论设备在线与否，不需要验证命令下发成功与否。双向命令则需要设备接收命令后返回信息，以此来验证命令下发成功与否。要求在设备在线的状况下进行。

输入

#无

输出

#与设备下发的命令一致
msg.payload

命令下发节点配置：

示例及其代码

1、直连设备命令下发（单向下发）(网关设备命令下发步骤类似)

[{"id":"cb816a7e7ca68724","type":"mqtt-in","z":"6a6f3334b805e346","name":"","deviceProfileId":"28e0a230-0307-11f0-bcb7-bfd329094ce9","organizationId":"2bdbedd0-fd96-11ef-988c-556d7f6d32b0","entityId":"2f494230-0307-11f0-bcb7-bfd329094ce9","credentialsId":"tSGHD82qM710Orb2","username":"","password":"","clientId":"","transportType":"DEFAULT","deviceType":"DIRECT_CONNECTION","gatewayId":"","sensorName":"","x":280,"y":260,"wires":[["bfbb88cd0e75d144"]]},{"id":"bfbb88cd0e75d144","type":"debug","z":"6a6f3334b805e346","name":"debug 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":520,"y":260,"wires":[]}]

2、网关子设备命令下发(单向命令)

[{"id":"efb15472f68632e9","type":"comment","z":"6a6f3334b805e346","name":"网关子设备命令下发经由网关设备转达，所发的信息中带有子设备的编号名称","info":"","x":450,"y":260,"wires":[]},{"id":"ed53d2dc8e1dfc4e","type":"mqtt-in","z":"6a6f3334b805e346","name":"","deviceProfileId":"c6513d70-03cc-11f0-8cc9-35f8257d46c5","organizationId":"2bdbedd0-fd96-11ef-988c-556d7f6d32b0","entityId":"a1187900-03cd-11f0-8cc9-35f8257d46c5","credentialsId":"1F2Oo7W8xFlyP797","username":"","password":"","clientId":"","transportType":"DEFAULT","deviceType":"SENSOR","gatewayId":"","sensorName":"31W46Pg4134BW40W","x":260,"y":360,"wires":[["8bfebd86bd2fc1e7"]]},{"id":"8bfebd86bd2fc1e7","type":"debug","z":"6a6f3334b805e346","name":"debug 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":650,"y":360,"wires":[]}]

3、网关子设备命令下发（双向命令）

[{"id":"6768c5bcb9dafdde","type":"mqtt-out","z":"6a6f3334b805e346","name":"","deviceProfileId":"c6513d70-03cc-11f0-8cc9-35f8257d46c5","organizationId":"2bdbedd0-fd96-11ef-988c-556d7f6d32b0","entityId":"","credentialsId":"1F2Oo7W8xFlyP797","username":"","password":"","clientId":"","transportType":"DEFAULT","deviceType":"SENSOR","gatewayId":"9456c960-03cd-11f0-8cc9-35f8257d46c5","thingsModelMapping":[{"key":"DO1","identifier":"DO1"}],"x":400,"y":280,"wires":[]},{"id":"f1753a04465a26f7","type":"inject","z":"6a6f3334b805e346","name":"","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"{   "31W46Pg4134BW40W": [     {       "DO1": 1     }   ] }","payloadType":"json","x":190,"y":280,"wires":[["6768c5bcb9dafdde"]]},{"id":"cf9e3f23beab0a50","type":"mqtt-in","z":"6a6f3334b805e346","name":"","deviceProfileId":"c6513d70-03cc-11f0-8cc9-35f8257d46c5","organizationId":"2bdbedd0-fd96-11ef-988c-556d7f6d32b0","entityId":"a1187900-03cd-11f0-8cc9-35f8257d46c5","credentialsId":"1F2Oo7W8xFlyP797","username":"","password":"","clientId":"","transportType":"DEFAULT","deviceType":"SENSOR","gatewayId":"","sensorName":"31W46Pg4134BW40W","x":160,"y":360,"wires":[["acb137888bfca863"]]},{"id":"acb137888bfca863","type":"debug","z":"6a6f3334b805e346","name":"debug 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":390,"y":360,"wires":[]}]

4、服务下发

[{"id":"6afc8c5a356c8636","type":"mqtt-in","z":"6a6f3334b805e346","name":"","deviceProfileId":"c6513d70-03cc-11f0-8cc9-35f8257d46c5","organizationId":"2bdbedd0-fd96-11ef-988c-556d7f6d32b0","entityId":"a1187900-03cd-11f0-8cc9-35f8257d46c5","credentialsId":"1F2Oo7W8xFlyP797","username":"","password":"","clientId":"","transportType":"DEFAULT","deviceType":"SENSOR","gatewayId":"","sensorName":"31W46Pg4134BW40W","x":340,"y":300,"wires":[["41cd4d88687edf24"]]},{"id":"41cd4d88687edf24","type":"debug","z":"6a6f3334b805e346","name":"debug 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":580,"y":300,"wires":[]}]