Certificate error while reading value from OPC UA server - by: Dev_Opc

Hello,

We are trying to read the PLC tag value from OPC UA server (FTLinx Gateway) with QuickOPC Professional. So, we have installed QuickOPC trial version & FT Linx gateway on same machine. As per ur documentation Profession edition is enough to read value from UA server.

Below is the example we are referring to write code in our client application.

opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...s%20of%20OPC%20UA%20Nodes.html

But we are getting below error while reading value in client application execution.

"Failure: OPC UA service result - {​​​​​​​​BadCertificateUntrusted}​​​​​​​​. The certificate is not trusted.\r\n --> {​​​​​​​​BadCertificateUntrusted}​​​​​​​​. Self Signed Certificate is not trusted.\r\nIssuerName: CN=FactoryTalk Linx Gateway, DC=[COMPUTER NAME HERE], S=--, C=--."

Could you please let us know the solution to resolve this & read UA server value with Security applied?

Please NOTE :- This issue comes when we have Security set to "Basic256 (Sign & Encrypt)" in FTLinx Gateway's UA server configuration. When the security is set to "None" in server configuration then there is no error and we are able to read the value. As we are looking to have Security.