Modbus RTU 协议说明

<h3 style="margin-top:28px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;line-height:30px"><br/></h3><p style="margin-top:24px;margin-right:0;margin-bottom:23px;margin-left:0;padding:0 0 0 0 ;line-height:30px"><strong><span style="font-family: Arial;letter-spacing: 0;font-size: 18px;background: rgb(255, 255, 255)">Modbus</span></strong><span style="font-family: Arial;letter-spacing: 0;font-size: 18px;background: rgb(255, 255, 255)"><span style="font-family:宋体">通信协议基于主从架构。它使用</span> RS-485<span style="font-family:宋体">、</span><span style="font-family:Arial">RS-422</span><span style="font-family:宋体">、</span><span style="font-family:Arial">RS-232 </span><span style="font-family:宋体">接口，以及以太网 </span><span style="font-family:Arial">TCP/IP </span><span style="font-family:宋体">网络（</span><span style="font-family:Arial">Modbus TCP </span><span style="font-family:宋体">协议）进行数据传输。</span></span></p><p style="margin-top:24px;margin-right:0;margin-bottom:23px;margin-left:0;padding:0 0 0 0 ;line-height:30px"><span style="font-family: Arial;letter-spacing: 0;font-size: 18px;background: rgb(255, 255, 255)">Modbus RTU <span style="font-family:宋体">消息由 </span><span style="font-family:Arial">SlaveID </span><span style="font-family:宋体">设备的地址、功能码、特殊数据组成，具体取决于功能码和校验和的 </span><span style="font-family:Arial">CRC</span><span style="font-family:宋体">。</span></span></p><p><br/></p>