SAN3-40M工业自动化 控制模块 DCS PLC系统原装进口

SAN3-40M工业自动化 控制模块 DCS PLC系统原装进口

SAN3-40M工业自动化 控制模块 DCS PLC系统原装进口

数据类型：

　　Atomic(内置原子型/基本数据类型)数据类型：

　　bool为枚举类型，其值为真或假，提供了一种开展逻辑计算和关联计算的方式。

　　num型支持算术计算和近似算术计算。

　　string型表示字符序列。

　　Record（记录型）数据类型：为一种带命名有序分量的复合类型。record类型的值为由各分量的值组成的复合值。一个分量可具备atomic型或record型，用户自定义复杂数据类型一般就是记录型。内置记录型有：

　　pos型表示空间位置（矢量）。

　　orient型表示在空间中的方位。

　　pose型表示坐标系（位置/方位组合）。

　　alias数据类型被定义为等同于另一种类型。alias类型提供一种对象分类手段。系统可采用alias分类来查找和显示与类型相关的对象，内置别名型数据有errnum和intnum。Errnum和intnum均为num的别名，用于表示错误和中断编号。

　　数据对象：

　　有四种数据对象：常量（CONST）、变量（VAR）、数据对象（PERS）和参数。（数据对象）可描述为“”变量。在两次会话之间，变量将保持值。在每次新会话开始时，即，当加载模块时（模块变量）或调用程序时（程序变量），将失去（重新初始化）变量值。

SAN3-40M工业自动化 控制模块 DCS PLC系统原装进口

Data type:

Atomic(Built-in Atomic/Basic Data type) Data types:

bool is an enumeration type. Its value can be true or false. It provides a way to carry out logical calculation and associated calculation.

num type supports arithmetic computation and approximate arithmetic computation.

The string type represents a sequence of characters.

Record data type: A compound type with named ordered components. The value of the record type is a composite value consisting of the values of each component. A component can have the atomic type or the record type, and user-defined complex data types are generally recorded. Built-in record types are:

The pos type represents the spatial position (vector).

orient indicates orientation in space.

The pose type represents the coordinate system (position/orientation combination).

The alias data type is defined as equivalent to another type. The alias type provides a means of classifying objects. The alias classification can be used to find and display type-related objects, and built-in alias data include errnum and intnum. Errnum and intnum are aliases of num and are used to indicate error and interrupt numbers.

Data object:

There are four types of data objects: constant (CONST), variable (VAR), data object (PERS) and parameter. (data object) can be described as "" variable. The variable retains its value between sessions. At the start of each new session, that is, when a module is loaded (module variables) or a program is called (program variables), the variable value is lost (reinitialized).