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OPC Server S7 1200 cannot pass data to VI

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Hi,

 

I use siemens s7 1200 plc with labview 2011 and Opc server 2012. I can connect to opc server and create tags. Moreover, I am able to see data changes with quick client.

 

The problem when I try to create I/O server and bound with shared variable, I pass it to VI. All tags are zero, I believe there is no communication to servers. Although there is no error message. Any suggestions?

 

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Message 1 of 6
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Can you show FREQ and OPC1 configuration?

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Message 2 of 6
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I'm late to the party, but if you need to troubleshoot OPC communications, you should start with opening the OPC Quick Client.  Check there to see if you have good connectivity - if it is broken there, you will never receive data to LabVIEW.

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Message 3 of 6
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Hello sir,

               We are too handling a project and stuck with the same problem. The OPC quick client shows the updated value but while using the opc variable in the labview it doesn't shows any changes , So please help as with some good solution.


@AEI_JR wrote:

I'm late to the party, but if you need to troubleshoot OPC communications, you should start with opening the OPC Quick Client.  Check there to see if you have good connectivity - if it is broken there, you will never receive data to LabVIEW.


 

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Message 4 of 6
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I have fixed my problem long time ago. The problem was I guess, the variables were not deployed properly. What I can suggest to deploy them individually and just start with a simple I/O like I0.0 or Q0.0
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Message 5 of 6
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Thank you very much and I will check to that . In case of any other mistakes , i will contact you. 

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Message 6 of 6
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