ABB 800xA User Manual page 178

Domain Environment
Domain Environment
When the 800xA History DA Server and Client PC are in same domain
Ensure that domain user accounts are used for running the OPC Server as well as
OPC Client. So, in this case, no need to create users in each PC (as it is done in
workgroup environment.)
Ensure that the user account is set properly for DCOM settings. For example, the
username in case of domain user account will be like 'DomainName\Username'.
Before doing the DCOM settings, please make sure that both the OPC Server and
the OPC Client are running with the same domain user account.
If the local user account is used for DCOM settings, then this user account should
be consistent in Server and Client PC.
When the 800xA History DA Server and Client PC are in different domain
When the 800xA History DA Server and Client PC are in different domain, first,
ensure that to setup a 'Trust Relationship' between both domains. Please contact
your system administrator for configuring the 'Trust Relationship' between domains.
Workgroup to Domain Environment
This scenario is a little bit complicated as compared to what we have seen in case,
when both Server and Client PCs are either in Workgroup or Domain Environment.
Make sure that when one PC is in domain and other is in workgroup is the
workgroup cannot authenticate domain user account.
So to make the Workgroup and Domain environment interoperate, ensure to have
local user account defined in both Server and Client PC. Following are important
points to consider:
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OPC Server must run as a local user account. This local user account should be
available in both Server and Client PC with same username and password.
OPC Client must run as a local user account on the client PC and that same
local user account must exist on the OPC Server PC with the same username
and password.
Appendix G Accessing 800xA History DA Server
2PAA107563-600 B