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- QuickOPC-Classic in .NET
- Browsing, Browse Dialogs and Controls
- FSGateway OPC server browsing issue
FSGateway OPC server browsing issue
29 Dec 2021 19:57 #10524
by micham
Replied by micham on topic FSGateway OPC server browsing issue
Done.
Thank you.
Michael
Thank you.
Michael
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29 Dec 2021 19:48 #10523
by support
Replied by support on topic FSGateway OPC server browsing issue
Hi.
Yes please. It's inside the InstanceParameters of EasyDAClient.
Regards
Yes please. It's inside the InstanceParameters of EasyDAClient.
Regards
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29 Dec 2021 19:41 #10521
by micham
Replied by micham on topic FSGateway OPC server browsing issue
Hi,
I am using this object programmatically. See below.
Dim easyDAClient = New EasyDAClient()
Should I set the EnableNativeClient to 'false' programmatically for the easyDAClient object?
Thank you.
Michael
I am using this object programmatically. See below.
Dim easyDAClient = New EasyDAClient()
Should I set the EnableNativeClient to 'false' programmatically for the easyDAClient object?
Thank you.
Michael
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29 Dec 2021 19:32 #10520
by support
Replied by support on topic FSGateway OPC server browsing issue
You *are* using the EasyDAClient object. Without it you wouldn't be able to get OPC properties or do other OPC operations. It is the main object of QuickOPC. You must have been somehow confused when you wrote the last post. It is even visible in the code you yourself have provided in this thread:
The 'easyDAClient' variable clearly holds an instance of the EasyDAClient object, not only because the name suggests so, but because you are using it to make the GetDataTypePropertyValue call.
Regards
Form1.DaItemDialog1.ServerDescriptor.MachineName = server_properties.server_comp_name
Form1.DaItemDialog1.ServerDescriptor.ServerClass = server_properties.RealServerName
If Form1.DaItemDialog1.ShowDialog() = DialogResult.OK Then
TagName = Form1.DaItemDialog1.NodeElement.ItemId
'Dim varType As VarType = easyDAClient.GetDataTypePropertyValue("", "OPCLabs.KitServer.2", "Simulation.Random")
Dim value As Object = Nothing
Dim exception As Exception = Nothing
Try ' Catch the exception May-29-2017
value = easyDAClient.GetDataTypePropertyValue("", server_properties.RealServerName, TagName)
Catch ex As OpcException
exception = ex
sTagType = ""
DisplayOPCException(exception)
End TryThe 'easyDAClient' variable clearly holds an instance of the EasyDAClient object, not only because the name suggests so, but because you are using it to make the GetDataTypePropertyValue call.
Regards
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29 Dec 2021 19:22 #10519
by micham
Replied by micham on topic FSGateway OPC server browsing issue
Hi,
Thank you for your answer.
I have not used the EasyDAClient object until today.
1. Should I add it to the main form and change the EnableNativeClient to 'false'?
2. Anything else is required with this object?
3. What is the purpose of this object?
Thank you.
Michael
Thank you for your answer.
I have not used the EasyDAClient object until today.
1. Should I add it to the main form and change the EnableNativeClient to 'false'?
2. Anything else is required with this object?
3. What is the purpose of this object?
Thank you.
Michael
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29 Dec 2021 18:04 #10517
by support
Replied by support on topic FSGateway OPC server browsing issue
Hello.
What you wrote does not change or contradict what I suggested.
The point that I was making was that the the EnableNativeClient settings should be the same across EasyDAClient objects and the dialog/control objects.
From the information I have, it looks that you have set EnableNativeClient to 'false' on the dialog object, but have *not* done that on the EasyDAClient object. Please do so.
Regards
What you wrote does not change or contradict what I suggested.
The point that I was making was that the the EnableNativeClient settings should be the same across EasyDAClient objects and the dialog/control objects.
From the information I have, it looks that you have set EnableNativeClient to 'false' on the dialog object, but have *not* done that on the EasyDAClient object. Please do so.
Regards
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24 Dec 2021 06:53 #10505
by micham
Replied by micham on topic FSGateway OPC server browsing issue
Hi,
As you can see in the code below, we have only one EasyDAClient object. It is in Form1.
Form1.DaItemDialog1.ServerDescriptor.MachineName = server_properties.server_comp_name
Form1.DaItemDialog1.ServerDescriptor.ServerClass = server_properties.RealServerName
If Form1.DaItemDialog1.ShowDialog() = DialogResult.OK Then
Thank you.
Regards,
Michael
As you can see in the code below, we have only one EasyDAClient object. It is in Form1.
Form1.DaItemDialog1.ServerDescriptor.MachineName = server_properties.server_comp_name
Form1.DaItemDialog1.ServerDescriptor.ServerClass = server_properties.RealServerName
If Form1.DaItemDialog1.ShowDialog() = DialogResult.OK Then
Thank you.
Regards,
Michael
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23 Dec 2021 19:23 #10503
by support
Replied by support on topic FSGateway OPC server browsing issue
Hello.
What you have shown is how the EnableNativeClient is set to 'false' for the dialog object. Which is fine.
My concern was, however, about the EasyDAClient object, where the property needs to be set separately. It is highly recommended that the property is set consistently to the same value in all the EasyDAClient objects, and all QuickOPC dialog/control objects throughout the program. If it is not set like that, you end up with different parts of the program using different methods to connect to the servers.
Regards
What you have shown is how the EnableNativeClient is set to 'false' for the dialog object. Which is fine.
My concern was, however, about the EasyDAClient object, where the property needs to be set separately. It is highly recommended that the property is set consistently to the same value in all the EasyDAClient objects, and all QuickOPC dialog/control objects throughout the program. If it is not set like that, you end up with different parts of the program using different methods to connect to the servers.
Regards
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23 Dec 2021 10:47 #10497
by micham
Replied by micham on topic FSGateway OPC server browsing issue
Hi,
Thank you for your answer.
1) The EasyDAClient is placed on the form, and the properties configured in the Visual Studio designer. See the attached screen capture.
Thank you.
Michael
Thank you for your answer.
1) The EasyDAClient is placed on the form, and the properties configured in the Visual Studio designer. See the attached screen capture.
Thank you.
Michael
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23 Dec 2021 10:15 #10496
by support
Replied by support on topic FSGateway OPC server browsing issue
Thank you for the code. It is perfectly OK. I was wrong about the error handling: It is done correctly in your code, and it is also OK on our side. The confusion stemmed from the fact that your code calls GetDataTypePropertyValue which indirectly calls GetMultiplePropertyValues, but has different error model; but the exception message only "knows" about GetMultiplePropertyValues. So please ignore that part of my previous reply.
I still have doubts about
1) The EasyDAClient is placed on the form, and the properties configured in the Visual Studio designer which then generates the code
2) you create "New EasyDAClient" and then set the property
3) It can be set from external configuration file.
Which approach are you using?
The reason I am asking is because from the error message (screenshot), it looks like that EnableNativeClient is 'true'.
Regards
I still have doubts about
You have not shown that part of the code. How is it done? There are multiple possibilities, such as:"EnableNativeClient is set to 'false' ."
1) The EasyDAClient is placed on the form, and the properties configured in the Visual Studio designer which then generates the code
2) you create "New EasyDAClient" and then set the property
3) It can be set from external configuration file.
Which approach are you using?
The reason I am asking is because from the error message (screenshot), it looks like that EnableNativeClient is 'true'.
Regards
Please Log in or Create an account to join the conversation.
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- QuickOPC-Classic in .NET
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