Product specifications

Accessing 800xA via OPC
3BDS011222-510 B 419
Accessing the 800xA OPC AE Server
OPC AE Support in the 800xA system enables you to subscribe to alarm and events
from a third party OPC AE client.
The status of the server is checked by calling the method GetStatus on
IOPCEventServer. The client should wait for the return code
OPCAE_STATUS_RUNNING before calling the other methods.
OPC AE Program Identities
The Program Identity for the System 800xA OPC AE Server to be used by third
party OPC AE clients is ABB.OPCEventServer (local server).
For connection via DCOM, use the DCOMCNFG tool to set the DCOM security
setting, refer to DCOM Security Settings for OPC on page 457.
OPC AE Compliancy
The System 800xA OPC Server is compliant with the OPC Alarm and Events
Standard 1.1 with some deviations. The following optional interfaces are not
supported:
•IOPCEventServer2
• IOPCEventSubscriptionMgt2
The optional interface IOPCEventAreaBrowser is partially supported.
Deviations.
• QueryConditionNames is purely dependent on the connected OPC servers.
One area is exposed to be compliant with clients that require the optional
interface IOPCEventAreaBrowser. No sources can be browsed.
Condition names defined by alarm expressions are not exposed by the
QueryConditionNames method.