ADAM-6300 User Manual 34
B.  The log window shows “BadSecureChannelClosed”, since OPC UA client 
and server need to have bidirectional authentication at first connection. 
C.  Go to Certificate tab for bidirectional authentication.
a.  Trusting the OPC UA Sever's certificate (on the OPC UA Client): Adam/
Apax  .NET  Utility  automatically  trusts  ADAM-6300  (sever)  certificate.
Name  of  Local  certificate  list  will  show  the Adam/Apax  .NET  Utility's
certificate.