OPC configuration, PC to S7-300 PLC

userxyz

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• Aug 28, 2007

• #1

I tried OPC, but I need help, doesn't work @ the moment.

In OPC scout I do not get my symbols of my projects.

this is my config:

 

JesperMP

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• Aug 28, 2007

• #2

Everything looks OK, except for the following:
In NetPro, for the PC280 you have to add a "connection".
Select the PC280 - OPC Server, and then click on the "spreadsheet" like list below the graphical layout, and a dialog for adding a connection will appear. Specify an "S7" type connection if you are in doubt. From then on it is fairly straightforward.
You can also follow my guide in the downloads section.

 

userxyz

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• Aug 31, 2007

• #3

hey

it works, thanks

 

userxyz

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• Aug 31, 2007

• #4

Visual Basic question

Ok, I have the data in OPC scout, so this means I'm ready to do something in VB.

I know S7, I have an OPC connection and I know VB, but how can I connect data...

Example:

Dim a as input

a = OPC_BOOL

If a = true then
shape1.backcolor = .... green in hex...
Else
shap1.backcolor = .... red in hex???



U can understand what I mean by this, something I want to be able to do...

Abou the connection, I tought, OLE, but the only thing I can find in the list is this: ???

 

userxyz

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• Aug 31, 2007

• #5

Opc

OPC is driving me nuts, Now I can't connect to online PLC's anymore, even I delete everything in the Station Configurator on the PC, can't get online anymore, Siemens = troubles

 

userxyz

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• Aug 31, 2007

• #6

I know

I now know a little step further how to connect data in VB

But how can I write something

 

userxyz

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• Aug 31, 2007

• #7

Step further

And this is what I have tried to link the RAMP of my PLC to the text1.text object:



Private Sub DatCon1_ValueChanged(ByVal Count As Long, ByVal UserIDs As Variant, ByVal ItemIDs As Variant, ByVal Values As Variant, ByVal Qualities As Variant, ByVal TimeStamps As Variant)
weergave = RAMP
text1.Text = weergave
End Sub



Anyone can help who has experience with OPC ... ?

 

userxyz

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• Sep 2, 2007

• #8

assignement doesn't work

I'm trying to assign something like the Siemens Manual tells metodo:

But, the SET butoon remains de-activated...

Any help from OPC and VB knowers ?

 

s7xp.com

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• Sep 2, 2007

• #9

Use OPC scout to modify values or read the manuals from the OPC foundation. You must make groups and items.

 

Last edited: Sep 2, 2007

userxyz

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• Sep 3, 2007

• #10

Opc Scout

In OPC SCout I can read the values, so this is okay.

But I want to do something with it in VB

 

JesperMP

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• Sep 3, 2007

• #11

Hi Combo.

Here are some examples with VB and OPC:
http://www.opcconnect.com/tooltech.php#vb

Unfortunately, there seems to be less examples for VB than for most other popular programming languages.