DGIOT实战教程——风量传感器接入

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[小迪导读]：
本教程在掌握基础modbusRTU标准协议概念和业务流程之后，通过真实的支持ModbusRTU标准协议的设备和DTU来进行实战演练。

系统需要使用两个设备以及若干导线：

风量传感器：采用的是管道式风速变送器（485型）
DTU：采用的是有人的口红CAT-1 DTU DR154

系统架构逻辑图如下，包括设备模拟，通道通信，模型设置，应用显示部分

操作步骤：

1.设备接线

电表信息

模块	管道式风速变送器（485型）
型号	PR-3009TH-FS-NO1
类型	Modbus 风速变送器

风速变送器

DTU信息

品牌	有人
型号	DR154（RS485）
密码（Pwd）	usr_cn

dtu图片

接线连接

风速变送器连接电源

风速变送器根据端口图正负连接电源正负，电源可以选用电源适配器。

DTU连接电源

根据DTU上的端口图,红色线(电源线)连接DC+,黑色线(地线)连接DC-

连接DTU和风速变送器

根据端口图,风速变送器的A端口连接DTU端口的RX(A),风速变送器的B端口连接DTU端口的TX(B)

说明 RX为接收,TX为发送

连接详情请可点击参考真实Mobuds接入

2.dtu配置

1.DTU正面二维码下方标识正负极连接电源，A,B端连接电表，到开手机微信扫码，扫描DTU二维码进入小程序，打开蓝牙连接与DTU背部IMEI相同编号的蓝牙，进入连接，密码为usr_cn。

2.打开参数设置，设置工作模式：地址设为部署的平台地址；端口号设为20651。

说明地址为服务器地址，端口号为服务器端口号，若无自己的物联网服务器，可选择地址:prod.dgiotcloud.cn，端口号设为20651
警告设置dtu时，工作模式设置完后需保存再设置串口，不能一次性设置，一次性设置会导致设置不完全

勾选注册包功能，注册包数据类型选择IMEI码，将会自动生成一个IMEI码。

3.打开参数设置，设置串口设置：波特率设为4800，校验位选择NONE。

说明支持ModbusRTU的设备：参数可以询问商家或者商品介绍获取设备的参数

file
file

3.创建采集通道

1.创建ModbusRTU采集通道。位置在通道管理-创建通道

2.选择Modbus采集通道并配置

3.产品添加通道后需对通道进行重启

4.通道日志查看

5.创建产品

1.要连接风速变送器，创建一种产品即可
2.创建产品

风速变送器

3.产品物模型配置
将以下物模型代码直接复制即可
风速变送器

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}