WinCC中如何與本地?cái)?shù)據(jù)庫(kù)(如SQL

SERVER、ORACLE)進(jìn)行數(shù)據(jù)交換？以下的測(cè)試將說(shuō)明如連接遠(yuǎn)程的數(shù)據(jù)庫(kù)：

Topic One: ODBC

Testing environment:

Primary PC with a WinCC, This PC, we named is

Server.

Secondary PC with a Access DB, This PC, we named is

Client.

Server PC and Client PC is connected by Ethernet.

Test step:

1. The Server PC and the Client PC must config the DB server

option. This is a very

important ODBC configuration step.

Control Panel -> SIMATIC Workstation -> Workstation

Configuration -> TCP/IP

Configuration for Multiple Node Systems -> select the DB server

option.

2. At the server PC node, active the WinCC project but do not

running this project(This action

is only for the first time ODBC configuration at the client PC) .

WinCC will build two ODBC

driver connections automatically, one is for RT Database and the

other is for RC Database.

For example:

"CC_u1_01-04-12_15:36:08R","CC_u1_01-04-12_15:36:08".

All of the jobs is over at the server PC node.

3. At the client PC node, open the contol panel folder and select

the "Sybase SQL

Anywhere5.0" driver for configuration ODBC Driver.

Data Source Name:CC_u1_01-04-12_15:36:08R (be named at the server

PC node.)

User ID: DBA

Password: SQL

Server Name: BJADLIJS_N (Server PC Node computer

name)

Database Name: CC_u1_01-04-12_15:36:08R (the same as Data Source

Name)

Database File://Bjadlijs/WinCC50_Project_u1/u1RT.db(the

"WinCC50_Project_u1" is a

share directory by WinCC automatically and the "u1RT.db" is the

WinCC RT database name.

you'd better search the "u1RT.db" file via the Browse

button.)

At this time, we completed the ODBC configuration.

4. At the server PC node, Running the WinCC project( Don't forget

to select the Tag Logging

option in the start up page, at the same time you could creat a

form by user archive only for

test.)

5. At the client PC node, you could open an Access and import or

link forms via an ODBC

driver that is builded at the step three.

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如何正確使用第三方軟件(如VB)對(duì)WinCC的SYBASE數(shù)據(jù)庫(kù)進(jìn)行操作，應(yīng)注意什么細(xì)節(jié)？

通過(guò)ODBC,可以使用第三方軟件對(duì)數(shù)據(jù)庫(kù)進(jìn)行操作(VB,VC,DELPHI).下面是分別使用

DAO,RDO和ADO方法對(duì)WinCC的RT數(shù)據(jù)庫(kù)訪問(wèn)的簡(jiǎn)單例程,開(kāi)發(fā)環(huán)境為VB6.0:

Public wsODBC As Workspace

Public cnODBC As Connection

Public rsODBC As Recordset

‘DAO method

Public Sub LoadODBCData()

Set wsODBC = DBEngine.CreateWorkspace("ODBC_ws", "Admin", "",

dbUseODBC)

Set cnODBC = wsODBC.OpenConnection("Connection1", , ,

_

"ODBC;UID=DBA;PWD=SQL;DSN=CC_416_01-04-17_00:54:00R")

Set rsODBC =

cnODBC.OpenRecordset("PDE#HD#TankValue_Arc#TankLevel2")

‘PDE#HD#TankValue_Arc#TankLevel2 is RT database sample

table

'DBGrid1.Text = rsODBC

T1.Text = rsODBC.Fields("T")

T2.Text = rsODBC.Fields("V")

rsODBC.Close

cnODBC.Close

wsODBC.Close

End Sub

’RDO method

Public Sub RDOData()

Dim rs As rdoResultset

Dim cn As New rdoConnection

Dim SQL As String

Set cn = New rdoConnection

With cn

.Connect = "uid=DBA;pwd=SQL;DSN=demo1;"

‘demo1 is a manully created ODBC DSN of Sybase

database

.EstablishConnection rdDriverNoPrompt, False

End With

SQL = "select * from contact"

Set rs = cn.OpenResultset(SQL, rdOpenKeyset, _

rdConcurReadOnly, rdAsyncEnable + rdExecDirect)

T3.Text = rs!city

T4.Text = rs!id

End Sub

‘ADO method

Public Sub AdoData()

Dim rs As ADODB.Recordset

Set rs = New ADODB.Recordset

rs.Open "select * from contact order by id", _

"uid=DBA;pwd=SQL;DSN=demo1;"

T5.Text = rs!id

T6.Text = rs!city

End Sub

值得注意的是

1.在OFFICE套件中,不能使用RDO訪問(wèn)ODBC數(shù)據(jù)庫(kù),因?yàn)镸ICROSOFT沒(méi)有對(duì)VBA提供

RDO的庫(kù)函數(shù).

2.ODBC的USER DSN 是在工程啟動(dòng)的過(guò)程中自動(dòng)生成的,無(wú)需用戶干預(yù)

3.有兩個(gè)數(shù)據(jù)庫(kù),一個(gè)是CONFIG 數(shù)據(jù)庫(kù),里面存放的是組態(tài)信息,另一個(gè)是實(shí)時(shí)(RT)數(shù)據(jù)庫(kù),

里面存放的是過(guò)程的數(shù)據(jù),包括歷史和報(bào)警等信息,用戶更多的將是對(duì)RT庫(kù)的操作;如果不清

除數(shù)據(jù)庫(kù)的具體結(jié)構(gòu),可以使用WINCC安裝目錄 ( 例如

c:/siemens/common/sqlany/scview.exe )

下的scview.exe查看具體的TABLE及字段,還可以

用其目錄下的isql.exe工具用SQL語(yǔ)句查詢具體的記錄

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WinCC怎樣作為數(shù)據(jù)提供者向外提供數(shù)據(jù)(怎么開(kāi)放其內(nèi)部數(shù)據(jù))？

主要有以下幾種方法：

1。.通過(guò)ODBC進(jìn)行l(wèi)ocal/remote方式的數(shù)據(jù)庫(kù)的連接(上面已經(jīng)敘述)；

2。.通過(guò)OPC進(jìn)行l(wèi)ocal/remote方式的過(guò)程數(shù)據(jù)的連接，包括WINCC之間的連接和與

WINAC之間的OPC通訊，以及其他支持OPC的第三方軟件和用戶自行開(kāi)放的OPC

SERVER/CLIENT軟件通訊；

3。 通過(guò)DDE與本機(jī)交換過(guò)程數(shù)據(jù)，通過(guò)NETDDE向遠(yuǎn)方PC提供數(shù)據(jù)；

4。.通過(guò)OLE與EXCEL通訊，在EXCEL中使用VBA，創(chuàng)建WINCC對(duì)象，使用其

GetValue和SetValue方法可以與WINCC交換數(shù)據(jù)。(具體見(jiàn)WINCC電子文檔

CONFIG2_C.PDF文件)。下面是EXCEL中的VBA例程：

Private Sub CommandButton1_Click()

Dim mcp As Object

Dim var As String

Dim value As Variant

Dim cell As Variant

Dim i As Integer

Set mcp = CreateObject("WinCC-Runtime-Project")

cell = "C3"

i = 1

Do While Not Range(cell) = ""

var = Range(cell)

value = mcp.GetValue(var)

Range("D" & 2 + i).value = value

cell = "c" & i + 3

i = i + 1

Loop

End Sub

Private Sub CommandButton2_Click()

Dim mcp As Object

Dim var As String

Dim value As Variant

Dim cell As Variant

Dim i As Integer

Dim bRet As Integer

Set mcp = CreateObject("WinCC-Runtime-Project")

cell = "c3"

i = 1

Do While Not Range(cell) = ""

var = Range(cell)

value = Range("E" & 2 + i).value

bRet = mcp.SetValue(var, value)

cell = "c" & i + 3

i = i + 1

Loop

End Sub

5。可以使用 WINCC提供的SIMATIC DMC ActiveX控件存取

WINCC過(guò)程數(shù)據(jù)，簡(jiǎn)單例程如下：

Dim tagVal as Variant

Dim myState as Long

Dim myDmc as Object

' Write the WinCC tag value named "NewTag"

'tagVal is the value which will be written in

WinCC

Private Sub Command1_Click()

Dmc1.Connect myDmc

Dmc1.Write "NewTag",100,tagVal

Dmc1.Disconnect

End Sub

' Read the WinCC tag value named "NewTag"

' tagVal will get the tag value from WinCC

Private Sub Command1_Click()

Dmc1.Connect myDmc

Dmc1.Read "NewTag",100,tagVal,myState

Dmc1.Disconnect

End Sub

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