SUN2000 33~40KTL
MODBUS Interface Description
Contents
Contents ............................................................................................................................... v
1 介绍 ............................................................................................................................... 1-1
1.1 术语、简写定义 ......................................................................................................................... 1-1
1.2 系统要求 ..................................................................................................................................... 1-2
2 通信协议概述 ................................................................................................................3-17
2.1 物理层 ....................................................................................................................................... 3-17
2.2 数据链路层 ............................................................................................................................... 3-17
2.2.1 寻址方式 .......................................................................................................................... 3-17
2.2.2 帧结构 .............................................................................................................................. 3-17
2.2.3 数据编码 .......................................................................................................................... 3-18
2.2.4 交互过程 .......................................................................................................................... 3-18
2.2.5 CRC 校验 ........................................................................................................................... 3-18
2.3 应用层 ....................................................................................................................................... 3-21
2.3.1 功能码列表 ...................................................................................................................... 3-21
2.3.2 异常码列表 ...................................................................................................................... 3-21
2.3.3 读寄存器(0X03) .............................................................................................................. 3-22
2.3.4 写单个寄存器(0X06) ...................................................................................................... 3-24
2.3.5 写多个寄存器(0X10) ...................................................................................................... 3-25
2.3.6 读设备识别码(0X2B) ...................................................................................................... 3-26
3 寄存器定义 ..................................................................................................................... 2-3
3.1 配置参数 ............................................................................................................ 错误!未定义书签。
3.2 系统命令 ............................................................................................................ 错误!未定义书签。
3.3 设备特征信息 .................................................................................................... 错误!未定义书签。
3.4 实时采样信息 .................................................................................................... 错误!未定义书签。
3.5 告警信息 ................................................................................................................................... 2-12
