View source for MC-Basic:COMMON or DIM SHARED or DIM ... AS CONST LONG or DOUBLE or STRING or STRING OF UTF8 or JOINT OF or LOCATION OF/zh-hans

{{Languages}}
== 缩写 ==

== 格式 ==
Common Shared <nowiki>|</nowiki> Dim Shared <nowiki>|</nowiki> Dim ''<const_name>''As Const Long <nowiki>|</nowiki> Double <nowiki>|</nowiki> String <nowiki>|</nowiki> String of UTF8 <nowiki>|</nowiki>  Joint <nowiki>|</nowiki> Location = ''<const_value>''

== 适用版本 ==
所有版本<br>
从版本4.5.10起声明UTF-8字符串是用的

== 描述 ==
这些命令用于定义各种范围中的用户常量。

'''System'''常量通过配置文件中的 '''Common Shared'''命令（程序块之前），用户任务（程序块之前）和终端进行定义。

'''Task'''常量是通过用户任务中的 '''Dim Shared''' 定义的（程序块之前）。

'''Local''' 常量通过程序，子程序和功能块中用户任务中的'''Dim''' 命令进行定义。

与点变量不同，点常量不与特定机器人类型相关联，因为它们实际上是仅由坐标数定义的向量

== 类型 ==
Long, Double, String, Joint or Location

== 取值范围 ==


== 单位 ==
关节和位置常量：用户定义位置单位

== 默认 ==


== 使用范围 ==
Configuration, Task or Terminal

从4.5.17版起，全局（common shared）声明也可以从库上下文中获得。

== 限制 ==
* 不支持数组和子程序或函数定义（参数和返回值）。
* 用户常量必须在声明中给出值
* 用户常量只能在声明语句中写入。 之后，他们变成只读。
* 用户常量不能通过“by-reference”传递给子程序和函数。 他们必须始终被“by value”传递。

== 例子 ==
‘SCARA robot Declaration :

common shared scara as group axnm=a1 axnm=a2 axnm=a3 axnm=a4  model = 4     <br>

Common Shared LConst as Const Long = 100

Dim Shared SConst as Const String  = “Task1.Prg”

Program

Dim  JConst as Const Joint of XYZR    = {0.0, 0.0, 0.0}

Dim  LocConst as Const Location of XYZR     = #{0.0, 0.0, 0.0}

<nowiki><code></nowiki>

End Program



== 参见 ==
* [[MC-Basic:COMMON SHARED ... AS LONG or DOUBLE or STRING|COMMON SHARED ... AS LONG or DOUBLE or STRING]]
* [[MC-Basic:DIM SHARED ... AS LONG or DOUBLE or STRING|DIM SHARED ... AS LONG or DOUBLE or STRING]]
* [[MC-Basic:DIM ... AS LONG or DOUBLE or STRING|DIM ... AS LONG or DOUBLE or STRING]]
* [[MC-Basic:COMMON SHARED or DIM SHARED or DIM ... AS JOINT OF ...|COMMON SHARED or DIM SHARED or DIM ... AS JOINT OF ...]]
* [[MC-Basic:COMMON SHARED or DIM SHARED or DIM ... AS LOCATION OF ...|COMMON SHARED or DIM SHARED or DIM ... AS LOCATION OF ...]]

[[Category:MC-Basic:Declarations|COMMON or DIM SHARED or DIM ... AS CONST LONG or DOUBLE or STRING or STRING OF UTF8 or JOINT OF or LOCATION OF]]