2024年6月15日发(作者：肖惜玉)
使用说明书
红外气体分析仪
通信功能(MODBUS)
型号：ZRE
/
INZ-TN5A0204-C
目 录
1. 关于通信功能 ..............................................................................................................................................1
1.1 概要 ....................................................................................................................................................1
2. 规格 ..............................................................................................................................................................2
2.1 通信规格 ............................................................................................................................................2
3. 连接 ..............................................................................................................................................................3
3.1 端子分配 ............................................................................................................................................3
3.2 连接 ....................................................................................................................................................4
4. 通信条件设定 ..............................................................................................................................................6
4.1 设定项目 ............................................................................................................................................6
4.2 设定操作 ............................................................................................................................................6
4.3 USB驱动程序的安装(虚拟COM端口) ............................................................................................6
5. MODBUS通信协议 .....................................................................................................................................7
5.1 概要 ....................................................................................................................................................7
5.2 信息的构成 ........................................................................................................................................8
5.3 子机应答 .........................................................................................................................................10
5.4 功能代码 .........................................................................................................................................11
5.5 出错校验代码(CRC-16)的计算 ....................................................................................................12
5.6 传输控制步骤 .................................................................................................................................14
6. 信息详情 ...................................................................................................................................................16
6.1 字数据的读取[功能代码：03
H
] ....................................................................................................16
6.2 只读字数据的读取[功能代码：04
H
] ............................................................................................18
6.3 字数据的写入(一个字)[功能代码：06
H
] ......................................................................................20
6.4 连续字数据的写入[功能代码：10
H
] ............................................................................................21
7. 地址映射和数据格式 ...............................................................................................................................23
7.1 数据格式 .........................................................................................................................................23
7.2 地址映射表 .....................................................................................................................................25
7.3 地址映射表的补充说明 .................................................................................................................34
8. 故障诊断 ...................................................................................................................................................35
－ i －
2024年6月15日发(作者：肖惜玉)
使用说明书
红外气体分析仪
通信功能(MODBUS)
型号：ZRE
/
INZ-TN5A0204-C
目 录
1. 关于通信功能 ..............................................................................................................................................1
1.1 概要 ....................................................................................................................................................1
2. 规格 ..............................................................................................................................................................2
2.1 通信规格 ............................................................................................................................................2
3. 连接 ..............................................................................................................................................................3
3.1 端子分配 ............................................................................................................................................3
3.2 连接 ....................................................................................................................................................4
4. 通信条件设定 ..............................................................................................................................................6
4.1 设定项目 ............................................................................................................................................6
4.2 设定操作 ............................................................................................................................................6
4.3 USB驱动程序的安装(虚拟COM端口) ............................................................................................6
5. MODBUS通信协议 .....................................................................................................................................7
5.1 概要 ....................................................................................................................................................7
5.2 信息的构成 ........................................................................................................................................8
5.3 子机应答 .........................................................................................................................................10
5.4 功能代码 .........................................................................................................................................11
5.5 出错校验代码(CRC-16)的计算 ....................................................................................................12
5.6 传输控制步骤 .................................................................................................................................14
6. 信息详情 ...................................................................................................................................................16
6.1 字数据的读取[功能代码：03
H
] ....................................................................................................16
6.2 只读字数据的读取[功能代码：04
H
] ............................................................................................18
6.3 字数据的写入(一个字)[功能代码：06
H
] ......................................................................................20
6.4 连续字数据的写入[功能代码：10
H
] ............................................................................................21
7. 地址映射和数据格式 ...............................................................................................................................23
7.1 数据格式 .........................................................................................................................................23
7.2 地址映射表 .....................................................................................................................................25
7.3 地址映射表的补充说明 .................................................................................................................34
8. 故障诊断 ...................................................................................................................................................35
－ i －