通过Node-RED 将RS485 4路继电器接入HA,带状态反馈

youhaishan

       通过向群里各位大神的学习，及测试，终于实现RS485 4路继电器板接入HA控制并实现状态反馈，目前只找到通过字符串反馈的方法，16进制数据反馈的暂时没学会怎么判断（群里如有Node js的高手望指点下），控制采用的是继电器板16进制的协议进行控制。

设备连接



机械面板接4路继电器板的IO输入口，继电器RS485接网络模块的RS485接口，网络模块接入网络。（设备都是网上淘的）

接入原理


HA采用的是MQTT协议，Node-RED上设置MQTT组件与HA通信，设置TCP Server服务，网络模块工作方式设置为TCP Client连接到TCP Server进行通信。Node-RED上用 switch 进行判断，function进行数据转换，change进行状态反馈。


控制原理


HA通过MQTT将OFF、ON指令反馈到Node-RED MQTT组件，Node-RED接收到OFF\ON指令后转换成继电器的控制协议发送到网络模块上，网络模块在发送到继电器板上实现控制。

反馈原理


当继电器状态改变时，将相对应的字符串状态信息发送到TCP Server，switch 进行判断后通过change将OFF\ON反馈到MQTT。

Node-RED代码

[{"id":"32f04645.76c51a","type":"function","z":"a3219be1.5eef08","name":"S1on","func":"msg.payload = new Buffer([0x55,0x01,0x32,0x00,0x00,0x00,0x03,0x8B]);\nreturn msg;","outputs":1,"noerr":0,"x":450,"y":140,"wires":[["fddbb240.55fb7"]]},{"id":"8545cae2.40f3b","type":"function","z":"a3219be1.5eef08","name":"S1off","func":"msg.payload = new Buffer([0x55,0x01,0x31,0x00,0x00,0x00,0x03,0x8a]);\nreturn msg;","outputs":1,"noerr":0,"x":450,"y":180,"wires":[["fddbb240.55fb7"]]},{"id":"341926d2.225802","type":"mqtt in","z":"a3219be1.5eef08","name":"","topic":"room1/1/2","qos":"0","broker":"c5ca30b6.ddee48","x":80,"y":160,"wires":[["2038d7f0.521cb8"]]},{"id":"2038d7f0.521cb8","type":"switch","z":"a3219be1.5eef08","name":"S1","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"ON","vt":"str"},{"t":"eq","v":"OFF","vt":"str"}],"checkall":"true","repair":false,"outputs":2,"x":270,"y":160,"wires":[["32f04645.76c51a"],["8545cae2.40f3b"]]},{"id":"9ede0feb.a8759","type":"change","z":"a3219be1.5eef08","name":"S1on","rules":[{"t":"set","p":"payload","pt":"msg","to":"ON","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":450,"y":420,"wires":[["deb69e8f.64b0f8"]]},{"id":"51dd564a.a85b48","type":"change","z":"a3219be1.5eef08","name":"S1off","rules":[{"t":"set","p":"payload","pt":"msg","to":"OFF","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":450,"y":460,"wires":[["deb69e8f.64b0f8"]]},{"id":"9f639c28.5755c8","type":"change","z":"a3219be1.5eef08","name":"S2on","rules":[{"t":"set","p":"payload","pt":"msg","to":"ON","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":450,"y":500,"wires":[["27f71cc8.6fb10c"]]},{"id":"68d95b98.c7af34","type":"change","z":"a3219be1.5eef08","name":"S2off","rules":[{"t":"set","p":"payload","pt":"msg","to":"OFF","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":450,"y":540,"wires":[["27f71cc8.6fb10c"]]},{"id":"deb69e8f.64b0f8","type":"mqtt out","z":"a3219be1.5eef08","name":"","topic":"room1/1/1","qos":"0","retain":"true","broker":"c5ca30b6.ddee48","x":750,"y":440,"wires":[]},{"id":"27f71cc8.6fb10c","type":"mqtt out","z":"a3219be1.5eef08","name":"","topic":"room1/2/1","qos":"0","retain":"true","broker":"c5ca30b6.ddee48","x":750,"y":520,"wires":[]},{"id":"83af934c.ec50c","type":"mqtt in","z":"a3219be1.5eef08","name":"","topic":"room1/2/2","qos":"0","broker":"c5ca30b6.ddee48","x":80,"y":260,"wires":[["aab43bdf.ec03e"]]},{"id":"aab43bdf.ec03e","type":"switch","z":"a3219be1.5eef08","name":"S2","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"ON","vt":"str"},{"t":"eq","v":"OFF","vt":"str"}],"checkall":"true","repair":false,"outputs":2,"x":270,"y":260,"wires":[["dc196f34.1903"],["c7f2cb7.1198638"]]},{"id":"c7f2cb7.1198638","type":"function","z":"a3219be1.5eef08","name":"S2off","func":"msg.payload = new Buffer([0x55,0x01,0x31,0x00,0x00,0x00,0x04,0x8b]);\nreturn msg;","outputs":1,"noerr":0,"x":450,"y":280,"wires":[["fddbb240.55fb7"]]},{"id":"dc196f34.1903","type":"function","z":"a3219be1.5eef08","name":"S2on","func":"msg.payload = new Buffer([0x55,0x01,0x32,0x00,0x00,0x00,0x04,0x8c]);\nreturn msg;","outputs":1,"noerr":0,"x":450,"y":240,"wires":[["fddbb240.55fb7"]]},{"id":"2a8e9a06.c48da6","type":"switch","z":"a3219be1.5eef08","name":"S1","property":"payload","propertyType":"msg","rules":[{"t":"eq","v":"room131","vt":"str"},{"t":"eq","v":"room130","vt":"str"},{"t":"eq","v":"room141","vt":"str"},{"t":"eq","v":"room140","vt":"str"}],"checkall":"true","repair":false,"outputs":4,"x":290,"y":480,"wires":[["9ede0feb.a8759"],["51dd564a.a85b48"],["9f639c28.5755c8"],["68d95b98.c7af34"]]},{"id":"c29bc05d.4b3d1","type":"tcp in","z":"a3219be1.5eef08","name":"","server":"server","host":"","port":"8080","datamode":"stream","datatype":"buffer","newline":"","topic":"","base64":false,"x":70,"y":480,"wires":[["2a8e9a06.c48da6"]]},{"id":"fddbb240.55fb7","type":"tcp out","z":"a3219be1.5eef08","host":"","port":"8080","beserver":"server","base64":false,"end":false,"name":"","x":720,"y":200,"wires":[]},{"id":"c5ca30b6.ddee48","type":"mqtt-broker","z":"","name":"测试","broker":"192.168.1.110","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"willTopic":"","willQos":"0","willPayload":"","birthTopic":"","birthQos":"0","birthPayload":""}]

复制代码

余歌唱晚

前来膜拜楼主……

chenquanhao

Node-RED的应用应该还很宽广，比如plc的控制接入，希望坛里大神继续研究开发

wanyakui520

膜拜楼主！好文章啊！！

lifeng5478

好文章！！！希望楼主视频来一个！！

xxnxx6652800

这个太SIX，感谢大腿

kris

你好，请问继电器与机械开关是怎样一个关系，或者是怎样连接的呢？

猪头先生

膜拜大神！支持原创

tanghuafu

如果用N1 只能通过TCP/IP?

youhaishan

tanghuafu 发表于 2018-8-24 19:40
如果用N1 只能通过TCP/IP?

N1没485接口吧，你就买个网络模块转换下