1、准备工作

1-1、T3000-云腾边缘一体机

商品图片待上传：

商品详情待替换：

1-2、CAN总线通信-温湿度传感器

1-3、通过USB转CAN通信接口连接电脑并测试传感器功能

1-3-1、USB转CAN通信接口接线图：

1-3-2、通过软件调试传感器

1、打开转换器，厂家提供得调试工具【ZQWL-USB-CANFD-Tool V1.3.5】

2、设置调试软件参数

1-4、连接设备与T3000云腾一体机

1-4-1、接线图

2、进入Node-red实例配置节点信息

节点接线图

PS：函数节点function3内容为针对CAN监听节点获取到的应答帧解析函数

const buf = msg.data; //得到的数据是buffer[7]
// var test = "";
var jsonObj = {};
if (buf == undefined || buf.length == 8) {
	return;
} else {
	//如果等于7；数据为[01,03,04,0D,98,0D,70]
	var wenduStr = (buf[3]).toString(16).toUpperCase() +
		(buf[4]).toString(16).toUpperCase();
	var wendu = parseInt(wenduStr, 16) / 100;

	var shiduStr = (buf[5]).toString(16).toUpperCase() +
		(buf[6]).toString(16).toUpperCase();
	var shidu = parseInt(shiduStr, 16) / 100;
	// test = shiduStr;

	jsonObj = {
		"wendu": wendu,
		"shidu": shidu
	}

}
msg.payload = jsonObj
// msg.payload = test;

return msg;

【CAN请求】节点配置

【CAN监听】节点配置

视频演示

Node-red界面完整代码

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