【小弟的攻略】：在本教程中掌握基本的modbusRTU标准协议概念和业务流程后，通过realModbusRTU标准协议设备和DTU进行实战演练。系统需要用到两台设备和几根线：温湿度传感器：SHT20传感器Modbus工业级DTU使用：某人的口红CAT-1DTUDR154系统架构逻辑图如下，包括设备模拟，通道通信，模型设置，应用展示部分操作步骤：1.设备接线电流表信息模块温湿度变送器型号SHT20传感器型号Modbus工业级高精度温湿度监控SHT20传感器DTU信息品牌人机型号DR154(RS485)密码(Pwd)usr_cndtu图片操作步骤SHT20传感器接上电源。SHT20传感器按端口图连接正负电源。电源可以是电源适配器。根据DTU上的端口图，红线（电源线）接DC+，黑线（地线）接DC-，连接DTU和SHT20传感器。根据端口图，SHT20传感器的A口接DTU口的RX(A)，SHT20传感器的B口接DTU口的TX(B)，说明RX是二、DTU配置1、DTU正面二维码下方标注的正负极接电源，A、B端接电流表。手机微信扫码，扫描DTU二维码进入小程序，打开与DTU背面IMEI相同号码的蓝牙连接，进入连接，密码为usr_cn。2、打开参数设置，设置工作模式：地址设置为部署平台地址；端口号设置为20111。注意地址为服务器地址，端口号为服务器端口号。如果没有自己的物联网服务器，可以选择地址：prod.dgiotcloud.cn，端口号设置为20111。警告设置dtu时，设置后需要保存并设置工作模式串口不能一次设置。一次性设置会导致设置不完整。查看注册包功能。如果注册包的数据类型为IMEI码，则会自动生成一个IMEI码。3、打开参数设置，设置串口设置：波特率设置为9600，校验位选择为NONE。说明支持ModbusRTU的设备：参数可以询问商家或产品介绍，获取设备的参数。三、创建采集通道1、创建ModbusRTU采集通道。位置在ChannelManagement-CreateChannel2.选择Modbus采集通道并配置3.将通道添加到产品后，需要重启通道4.查看通道日志5.创建产品1.连接到ModbusRTU，只需创建一个产品2.创建产品ModbusRTU3。产品对象模型配置直接复制以下对象模型代码即可ModbusRTU{"events":[],"properties":[{"accessMode":"r","dataForm":{"address":"0X10","afn":"","byteType":"","bytelen":"","collection":"%%humid/10","control":"%d","countcollection":"%s","countround":"all","countstrategy":20,"da":"","data":"null","dt":"","iscount":"0",“offset”：0，“operatetype”：“readCoils”，“order”：0，“originaltype”：“short16_AB”，“protocol”：“MODBUSRTU”，“rate”：1，“round”：“all”，"slaveid":"0X10","strategy":"计算值"},"dataSource":{"":[],"_dlinkindex":"","address":"1","dis":[{"data":"2","key":"0000","undefined":"0000"}],"operatetype":"readIregs","originaltype":"short16_AB","registersnumber":"1","slaveid":"temp_humid"},"dataType":{"das":[],"specs":{"max":100,"min":0,"precision":3,"step":0,"unit":"%"},"type":"float"},"devicetype":"湿度传感器","identifier"：“潮湿”，“索引”：0，“isaccumulate”：false，“isshow”：true，“isstorage”：true，“moduleType”：“属性”，“name&q”uot;:"湿度","required":true,"updateAt":"1659081134998"},{"accessMode":"r","dataForm":{"address":"0X10","afn":"","byteType":"","bytelen":"","collection":"%%temp/10","control":"%d","countcollection":"%s","countround":"all","countstrategy":20,"da":"","data":"null","dt":"","iscount":"0","offset":0,"operatetype”：“readCoils”，“order”：0，“originaltype”：“short16_AB”，“protocol”：“MODBUSRTU”，“rate”：1，“round”：“all”，“slaveid”：“0X10”,"strategy":"计算值"},"dataSource":{"":[],"_dlinkindex":"","address":"0","dis":[{"data":"2","key":"0000","undefined":"0000"}],"operatetype":"readIregs","originaltype":"short16_AB","registersnumber":"1","slaveid":"temp_humid"},"dataType":{"das":[],"specs":{"max":100,"min":-100,"precision":3,"step":0,"unit":"℃"},"type":"float"},"devicetype":"温湿度传感器","identifier":"temp","索引“：1，”isaccumulate“：假，“isshow”：真，“isstorage”：真，“moduleType”：“属性”，“名称”：“温度”，“必需”：true,"updateAt":"1659081126141"},{"accessMode":"r","dataForm":{"address":"0X10","afn":"","byteType":"","bytelen":"","collection":"%s","control":"%d","countcollection":"%s","countround":"all","countstrategy":20,"da":"","data":"null","dt":"","iscount":"0","offset":0,"operatetype":"readCoils","order":0,"originaltype":"short16_AB","protocol":"MODBUSRTU","rate":1,"round":"all","slaveid":"0X10","strategy":"3"},"dataSource":{"":[],"_dlinkindex":"","address":"0X0001","dis":[{"data":"2","key":"0000",“undefined”：“0000”}]，“operatetype”：“readIregs”，“originaltype”：“bit”，“registersnumber”：“2","slaveid":"0X01"},"dataType":{"das":[],"specs":{"max":10000000000000000,"min":0,"precision":3,"step":0,"unit":""},"type":"int"},"devicetype":"温湿度传感器","identifier":"temp_humid","index":2,"isaccumulate":false,"isshow":false,"isstorage":false,"moduleType":"properties","name":"温湿度","required":true,"updateAt":"1656584724858&》；}],"services":[],"tags":[]}4.如何复制对象模型。将对象模型代码复制粘贴到产品管理-配置-对象模型-查看对象模型。复制完成后可以点击编辑查看配置状态，dgiot提供了modbusRTU多个数据一次性全部读取的解决方案连接传感器设备的DTU注册成功2.连接SHT20传感器设备的DTU成功在线3.设备图显示成功7.ModbusRTU数据采集成功1.SHT20传感器实时数据2.ModbusRTU历史数据modbusRTU设备用户可以使用虚拟modbus软件自行仿真。虚拟modbus连接点击了解详情。【小迪点评】dgiot支持ModbusRTU协议设备接入，有真实设备的用户尝试进行设备接入演练。真实设备的连接是针对新手玩家的，dgiot的接线步骤会提供很大的帮助。如果您想了解更多关于dgiot的具体细节，欢迎您在GitHub上查看相关源码。
