DS200SDCIG2AHB燃机电气卡件
本节概述了可使用Modbus、LIL或以太网从站点获取的数据，其通过以太网协议提供Modbus。在以太网Modbus协议中，所有列出的Modbus项为：可用，但嵌入在Modbus/以太网协议框架中。参考第7节，了解实际数据
6.1 MODBUS数据映射
Modbus是一种主/从协议，其中主设备（例如基于PC的操作员工作站）将命令发送到：一个从机（即Moore 353过程自动化控制器）并等待响应。每个站都有一个独特的网络地址（1-32），配置为站点参数的一部分，用于标识特定控制器。
数据被分配给寄存器（16位字）或线圈（1位）。IEEE浮点数（实数）为：分配给两个连续寄存器，第一个寄存器包含最高有效位，第二个寄存器包含最低有效位浮点数的一部分。
该站支持Modbus功能代码01、02、03、04、05、06、08和16。第7节列出了Modbus图中的可用数据和特定位置。以下是Modbus数据的概述映射。
电站线圈x0001-x0071
环形线圈x0296-x1495
扩展回路线圈（奇数按钮）V2.1………………………x8701-X9100
扩展MODBUS寄存器
MODBUS保持寄存器的传统寻址仅限于然而，由于实际地址包含在16位字中，因此9999以上的地址可用。许多的Modbus主机支持这种扩展寻址。a中包含的定序器和定时器的配置数据在此空间中可以访问单个定序器回路。可访问的实际回路包含在Modbus中参数MSLCP Modbus定序器和定时器配置指针位于寄存器40041中。该寄存器
包含可使用这些扩展参数配置的回路的Modbus索引。少数这些参数也已映射到实际循环区域中列出的区域中，用于无法映射的主控器访问扩展区域。
此外，还为对等网络中使用的Modbus寄存器的映射保留了许多寄存器以太网功能块的功能。LIL数据被分配给两种数据类型之一。第一个是全局数据，它占用每个通道的参数1并且每0.5秒由LIL接口发送。其余数据为非全局数据，占用参数2至256，并响应LIL读取命令发送，或可由LIL更改写入命令。
每个参数是一个16位字。IEEE浮点数（实数）分配给两个连续参数
第一个包含浮点数的最高有效部分，第二个包含浮点的最低有效部分
数字字符串数据可以占用一个或多个连续参数。下表提供了概述第7节列出了可用数据的描述。表中的首字母缩写词标识了第7节数据可使用320型独立计算机接口访问。参考AD320-10型号
320 ICI用户手册和AD320-20使用320型ICI编写应用软件的指南。
This section provides an overview of the data that can be obtained from the station using Modbus, LIL, or Ethernet,
which provides Modbus over Ethernet protocol. In the Modbus over Ethernet protocol all listed Modbus items are
available but are embedded in the Modbus/Ethernet protocol frame. Refer to Section 7 for detailed list of the actual
data.
6.1 MODBUS DATA MAPPING
Modbus is a master/slave protocol where a master device (e.g. PC-based operator workstation) sends commands to
one slave (i.e. Moore 353 Process Automation Controller) and waits for a response. Each station has a unique
network address (1-32), configured as part of the station parameters, that identifies a specific controller.
Data is assigned to either a register (16-bit word) or a coil (1-bit). An IEEE floating point number (Real) is
assigned to 2 consecutive registers with the first containing the most significant and the second the least significant
portion of the floating point number.
The station supports Modbus function codes 01, 02, 03, 04, 05, 06, 08, and 16. Section 7 provides a listing of
available data and specific locations within the Modbus map. The following is the overview for the Modbus data
mapping.
Station Coils......................................................................................x0001 - x0071
Loop Coils.........................................................................................x0296 - x1495
Extended Loop Coils (ODD Pushbuttons) V2.1...............................x8701 - x9100EXTENDED MODBUS REGISTERS: The traditional addressing of Modbus Holding Registers has been limited to
9999. However, since the actual address is contained in a 16-bit word, addresses above 9999 are available. Many
Modbus Masters support this extended addressing. Configuration data for a Sequencer & Timers contained in a
single sequencer loop can be accessed in this space. The actual loop that can be accessed is contained in the Modbus
parameter MSLCP Modbus Sequencer & Timers Configuration Pointer located in register 40041. This register
contains the Modbus Index for the loop that can be configured with these extended parameters. A small number of
these parameters have also been mapped in the areas listed within the actual loop area for those Masters that cannot
access the extended area.
In addition, there are a number of registers reserved for the mappings of Modbus registers used in the Peer-to-Peer
functionality of the Ethernet function blocks.LIL data is assigned to one of two data types. The first is global data which occupies parameter 1 of each channel
and is transmitted by the LIL interface every 0.5 seconds. The remaining data is non-global which occupies
parameters 2 through 256 and is transmitted in response to a LIL READ command or can be changed by a LIL
WRITE command.
Each parameter is a 16-bit word. An IEEE floating point number (Real) is assigned to 2 consecutive parameters
with the first containing the most significant and the second the least significant portion of the floating point
number. String data can occupy one or more consecutive parameters. The following tables provide an overview
listing of available data with descriptions located in Section 7. The acronym in the table identifies the data in
Section 7. Data can be accessed using the Model 320 Independent Computer Interface. Refer to AD320-10 Model
320 ICI User Manual and AD320-20 Guidelines for Writing Application Software Using the Model 320 ICI.
