第2页 E20185-P920-B706-X-5D00
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安全须知······················································································································3
1.1 和安全有关的术语·····················································································································3
2 SIPOS 5 Flash电动执行机构的Modbus总线接口······················································3
2.1 概述 ··········································································································································3
2.2 Modbus总线接口 ······················································································································4
2.3 Modbus RTU – 基本功能··········································································································4
2.3.1 报文结构·······················································································································································4
2.3.2 Modbus串行通讯的消息帧 ···························································································································5
2.3.3 三种PDU类型 – 通讯过程·····························································································································5
2.3.4 数据模型·······················································································································································6
2.3.5 功能码 – 支持的服务 ····································································································································6
3 技术数据及功能···········································································································7
3.1 带Modbus RTU总线接口的SIPOS 5 Flash电动执行机构··························································7
3.2 带Modbus 总线接口的SIPOS 5 Flash电动执行机构 – 基本功能···············································8
3.3 带Modbus总线接口的SIPOS 5 Flash电动执行机构 – 附加的功能 ··········································10
3.4 电气连接（铜缆或光纤）········································································································11
4 设置Modbus RTU的通讯参数···················································································13
4.1 Modbus RTU的通讯参数 ········································································································13
4.2 可选项∕设定工具···················································································································13
5 使用带Modbus 总线接口的SIPOS 5 Flash电动执行机构········································14
5.1 通过Modbus总线进行控制······································································································14
5.2 禁止就地控制单元···················································································································14
5.3 显示的故障信息（专业型PROFITRON） ···············································································14
6 广播方式及安全功能··································································································15
6.1 广播信息·································································································································15
6.2 Modbus的安全功能·················································································································15
7 Modbus RTU的冗余型 ·····························································································15
8 连接状态和故障信号··································································································16
8.1 连接状态·································································································································16
8.2 总线通讯故障∕和校验故障 ····································································································16
9 参考文献····················································································································34
附录
A 输入寄存器······················································································································ 17-22
B 保持寄存器······················································································································ 23-30
C 离散量输入····························································································································31
D 线圈·······································································································································32
E 电报：“读取异常状态”，“报告从站标识”及“读取设备标识” ·····································33
