search
HomeDatabaseMysql TutorialWincc操作数据库SQLSERVER

Wincc操作数据库SQLSERVER

Jun 07, 2016 pm 03:55 PM
mysql

WINCC写数据库

在WINCC的图形编辑器中,在输入域的属性中。选择事件。再选择键盘的释放动作,在动作代码框中写下例如以下代码:

Dim conn,rs
Dim strsql
Dim a
a=HMIRuntime.Tags("datavariable").Read
Set conn=CreateObject("adodb.connection")
   Set rs=CreateObject("adodb.recordset")
   conn.Provider = "sqloledb"
   conn.open "SERVER=Yang-PC\WINCC;uid=sa;pwd=sa;database=datasavetest"
   strsql="insert into tt_ch(TagValue)VALUES('" & a &"')"
   Set rs=conn.execute(strsql)

   conn.close
   Set rs=Nothing

   Set conn=Nothing     

End If

如此,就可以实现WINCC的实时数据向SQL SERVER的数据写入。

WINCC读数据库

Dim conn,rs
Dim strsql
Dim temp1,temp2

Set conn=CreateObject("adodb.connection")
    Set rs=CreateObject("adodb.recordset")
    conn.Provider = "sqloledb"
    conn.open "SERVER=YANG-PC\WINCC;uid=sa;pwd=1988525;database=datasavetest"
 
  strsql="select * from table_1"
    Set rs=conn.execute(strsql) 
    rs.movenext'读取数据集中的下一条还能够通过数据集的其它属性进行操作  

temp1 = rs.Fields(0).Value '取第一列的值

'temp1 = rs("text")从数据集中取字段“text”的值

Set temp2 = HMIRuntime.Tags("textdataAuto")
temp2.Read
temp2.Write temp1

conn.close
Set rs = Nothing
Set conn=Nothing 

假设我们须要连接的是access数据库,仅仅须要将

"SERVER=YANG-PC\WINCC;uid=sa;pwd=1988525;database=datasavetest"

替换为

"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=datasavetest"

更多相关教程请访问 MySQL视频教程

Statement
This article is reproduced at:CSDN. If there is any infringement, please contact admin@php.cn delete
What Are the Limitations of Using Views in MySQL?What Are the Limitations of Using Views in MySQL?May 14, 2025 am 12:10 AM

MySQLviewshavelimitations:1)Theydon'tsupportallSQLoperations,restrictingdatamanipulationthroughviewswithjoinsorsubqueries.2)Theycanimpactperformance,especiallywithcomplexqueriesorlargedatasets.3)Viewsdon'tstoredata,potentiallyleadingtooutdatedinforma

Securing Your MySQL Database: Adding Users and Granting PrivilegesSecuring Your MySQL Database: Adding Users and Granting PrivilegesMay 14, 2025 am 12:09 AM

ProperusermanagementinMySQLiscrucialforenhancingsecurityandensuringefficientdatabaseoperation.1)UseCREATEUSERtoaddusers,specifyingconnectionsourcewith@'localhost'or@'%'.2)GrantspecificprivilegeswithGRANT,usingleastprivilegeprincipletominimizerisks.3)

What Factors Influence the Number of Triggers I Can Use in MySQL?What Factors Influence the Number of Triggers I Can Use in MySQL?May 14, 2025 am 12:08 AM

MySQLdoesn'timposeahardlimitontriggers,butpracticalfactorsdeterminetheireffectiveuse:1)Serverconfigurationimpactstriggermanagement;2)Complextriggersincreasesystemload;3)Largertablesslowtriggerperformance;4)Highconcurrencycancausetriggercontention;5)M

MySQL: Is it safe to store BLOB?MySQL: Is it safe to store BLOB?May 14, 2025 am 12:07 AM

Yes,it'ssafetostoreBLOBdatainMySQL,butconsiderthesefactors:1)StorageSpace:BLOBscanconsumesignificantspace,potentiallyincreasingcostsandslowingperformance.2)Performance:LargerrowsizesduetoBLOBsmayslowdownqueries.3)BackupandRecovery:Theseprocessescanbe

MySQL: Adding a user through a PHP web interfaceMySQL: Adding a user through a PHP web interfaceMay 14, 2025 am 12:04 AM

Adding MySQL users through the PHP web interface can use MySQLi extensions. The steps are as follows: 1. Connect to the MySQL database and use the MySQLi extension. 2. Create a user, use the CREATEUSER statement, and use the PASSWORD() function to encrypt the password. 3. Prevent SQL injection and use the mysqli_real_escape_string() function to process user input. 4. Assign permissions to new users and use the GRANT statement.

MySQL: BLOB and other no-sql storage, what are the differences?MySQL: BLOB and other no-sql storage, what are the differences?May 13, 2025 am 12:14 AM

MySQL'sBLOBissuitableforstoringbinarydatawithinarelationaldatabase,whileNoSQLoptionslikeMongoDB,Redis,andCassandraofferflexible,scalablesolutionsforunstructureddata.BLOBissimplerbutcanslowdownperformancewithlargedata;NoSQLprovidesbetterscalabilityand

MySQL Add User: Syntax, Options, and Security Best PracticesMySQL Add User: Syntax, Options, and Security Best PracticesMay 13, 2025 am 12:12 AM

ToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith

MySQL: How to avoid String Data Types common mistakes?MySQL: How to avoid String Data Types common mistakes?May 13, 2025 am 12:09 AM

ToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.