Need help urgently on an issue with B&R Pvi OPC server.

D

Thread Starter

Deepti

Hi All,

I need help urgently on an issue.
I am trying to communicate with one of the B&R PLCs CPU- 7CP476 via RS232

With the B&R Opc Configurator, I could browse the tags and see their values. I want to communicate the Pvi OPC server through our own client.

When I tried to capture the values of tags through the client, I could add items with data type like INT, FLOAT etc and get their values properly, but could not Add the items with datatype UINT16, UINT32 etc.

I got the error on server saying that the item has different data type on server. I think this problem is of data type mismatch between the OPC Server and the client. I am using VT_I2,VT_I4 for normal INT, VT_UI2 for UINT16 and VT_UI4 for UINT32 in client.

Can anyone please suggest where could be the problem and what should I do to resolve it??

Any help would be appreciated.

Deepti
 
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