Example

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// If the server needs a Username and Password use
// following line and enter your authentication data
OPCUAClient.UserLogin.SetUser('UserName','Password');

// If you want to login with an certificate please use following code
// SetCertificate(PublicKey,PrivatKey,PrivateKeyPassword)
//

OPCUAClient.UserLogin.SetCertificate('c:\mydata\MyName.der','c:\mydata\MyName.pem','mypassword');

For a complete secure connect sample program, click here.