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、RS232-温湿度传感器及其转接头

设备1：USB转232串口线DB9 :公头螺母款

设备2：DB9黑胶母头+螺杆(HL-MHHJ9F01)

设备3：卡轨温度湿度气压变送器三合一传感器RS232

2、接线说明

3、使用官方提供的软件对传感器进行测试

上电、USB插入电脑，找到串口号：

右击“我的电脑”；——》“管理”——》“设备管理器”

打开厂家，所提供的Demo程序

4、RS232设备连接T3000RS485-1接口接线图

5、进入Node-red实例中，进行节点配置

节点接线图

232-请求(Modbus-请求节点)配置：

串口节点配置：

232解析(Modbus-解析节点)配置：

视频演示

Node-red完整流程代码

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