Hi Steve.
Thanks for your valuable inputs. I tried to connect opc server using matrikon explorer with the same account.
Even with Matrikon we got an error while connecting but still allowing to create connection and add tags. After adding tags, no value has shown up and giving quality as bad non specific for all tags.
So we updated the same to Honeywell (OPC server) team and they are working on it.
Once it is done I will get back to you.
And I asked them regarding Dcom settings as you said.
FYI,
OPC server sits on workgroup and PCO on Domain so we have maintained same user account name for both machines. Fot this account we have given adminstrator rights on pco machine.
Once it is done I will get back to you.
Thanks,
Raj