加载中…ABB_800xA学习笔记224：System_800xA_Control_6.0_AC_800M_Configuration14
(2023-12-08 19:25:48)
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abbsystem_800xa_ac800m配置手册 |
分类： ABBDCS |
继续学习配置手册第一章
Types and Instances -
Concept
类型和实例 - 概念
Types are used to represent motors,
valves, tanks, etc. that are located in a
plant area, and
then turn them into manageable units in a control project (for
example,
类型用于表示工厂区域的电机、阀门、罐子等等，然后将它们转换成控制项目中可管理的单元（比如电机类型、阀门类型、搅拌器类型等等）。实例基于每一种类型创建。
A
type is the source (the blue print) for a unit (motor, valve, tank,
etc), while an instance represents the unit(s) in libraries
and applications. There is an
inherited mechanism between a type and all its instances,
where all instances have the
same
类型是一个单元（电机、阀门、罐子）的源（蓝图），而实例表示库和应用程序的单元。这是类型和其所有实例的继承机制，所有的实例由类的同样的性能，修改类的性能同时影响所有的实例。
A
type is a generic solution, which can be used by many instances,
and contains programming code with variables, functions,
connection parameters (textual
and
类型是通用的解决方案，可以被许多实例使用，包含编程代码与变量，函数，连接参数(文本和图形实例、图形实例和形式实例1。
Figure 4 shows the relationship between a type
located in a library and two instances created in an
application.
图4展示了库中的类型和应用程序中创建的实例之间的关系。
Figure 4. Relationship between a
type and two instances.
图 4. 类型和两个实例的关系
The type contains the code, whereas
each instance contains a list of
computed variable
values. The instance does not contain any code; it uses the code
inside the
类型包含代码，而每一个实例包含列表计算变量值。实例不包含代码，它使用类型内部代码来操作自己的局部变量值。
1.
注释1.
A
type is always static and cannot run by itself in applications. To
execute the code inside the type, an instance based on the type
must be created. The instance
executes
类型是中式景泰的，不能再应用程序中单独运行。要执行类型内部的代码，必须创建基于此类型的实例。实力执行类型内部的代码，指向库中或者应用程序中的类型。
All
instances based on the same type have the same characteristics,
which means they
have equal access to everything in the type. An instance does not
contain a
基于同种类型的所有的实例有相同的特征，意味着它们对类型中的所有内容有同等访问权限。实例不包含程序编辑器或者代码块。因此代码不能在实例中编写。所有逻辑必须在类型中创建。
The
allocated memory for creating a type solution (for example, a motor
type solution that
contains one motor type and 20 motor instances) is distributed
mainly
用于创建类型解决方案（例如点击类型解决方案包含点击类型和20个电机实例）的分配内存主要分布在类型内部的代码。因此，与类型本身相比，每一个新的实例（电机）成本（分配的内存）非常小。实力仅需要给变量分配内存，因为代码是从类型进行定位和执行的。
It
is easier to update the application while working with newer
version of types, since the inherited mechanism takes care of
changes that often concern hundreds
of
在使用较新版本的类型时，更新应用程序相对容易（和不使用类型和实例相比较），因为继承机制可以处理通常数百个实例的更改（如果不使用类型和实例，修改同一种类型设备控制程序逻辑需要一个设备一个设备的修改）。可以对类型进行一次代码更改(例如，声明额外的连接参数)，并且所有实例同时继承此更改。
Control Builder also contains a number of
structured data types. For more information, refer to the System 800xA Control
AC 800M Planning (3BSE043732*)
Control Builder
同时包含许多结构数据类型。更多信息，参见《the System
800xA Control AC 800M Planning
(3BSE043732*)
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