WinCC中如何使用VBS读写变量，举例说明

Read data

其中 data 是读取变量的方法，如果data=1，直接从 AS 系统读取，相当于C 脚本中的   Get*****wait() 函数，如果省略，则从Wincc 变量管理器中建立的变量中读取。文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

Write data ， 1文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

其中 data 是需要写入变量的数值，1 代表直接写入 AS 系统，相当于C 脚本中的       Set*****wait() 函数，1 省略，则写入到由 Wincc变量管理器建立的变量中去。文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

实例：文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

读取变量的方法：文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

1.[code]文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

Dim objTag文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

Set objTag=HMIRunTime.Tags("变量名")文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

[/code]文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

 文章源自公式库网-https://www.gongshiku.com/html/201908/wincczhongruheshiyongvbsduxiebianliangjulishuoming.html

2.[code]objTag.Read

HMIRunTime.Tags("变量名").Read

[/code]