供应ATA4S-00连接器
横河ATA4S-00连接器
DCS培训资料:
<Toc> <Ind> <D1.1 Regulatory Control Blocks> D1-7
D1.1.2 I/O Data Handled by the Regulatory Control Blocks调整控制块处理的I/O数据
As a rule, the data transmitted via I/O terminals handled by the regulatory control blocks must be the engineering unit data. Each data item consists of data value and data status.作为一个准则,经过I/O端子传输给调整控制块的数据必须是工程单位型的数据。每个数据项应包括数据值和数据状态。
■ Data Value 数据值
The data value is a numeric data that is transmitted in or out of a function block. The data values handled by the blocks include process variable (PV), cascade setpoint value (CSV) and manipulated output value (MV).数据值是在一个功能块内或外进行传输的一个数字的数据。这种被功能块所处理的数值可以包括过程变量,串级设定值和操作输出值。
The data values handled by the regulatory control blocks are numeric data in engineering unit. However, the data received from the input modules (excluding the input modules for temperature measurement as well as for pulse trains) and the setpoint data sent to analogue output modules are given as percentage values in the range from 0% to 100%.调整控制块处理的数值必须是带工程单位的数字值。数据被输入模块接收(温度测量和脉冲串的输入模块除外),然后设定值被发送到模拟输出模块,形式为0%到100%的百分数值。
The data value read into a function block via an input terminal is called “input data,” while the value written out of a function block via an output terminal is called “output data.” 经由输入端子读入功能块的数据值叫做输入数据,而由输出端子从功能块写出的值叫做输出数据。
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