OPC
OPCUA tag search - returned tag format
If you experience issues with full Browse Paths being unable to be resolved by TopView's OPC UA tooling, you have other options to return Node IDs or browse paths combined with Node IDs from TopView's "Add tags"/ tag search dialog. In TopView 7.2 and ...
Emerson DeltaV OPC Server: Class not registered, error 0x80040154
DeltaV OPC Server connection error: Class not registered, error 0x80040154 The above error can occur in TopView 7.0 and later when attempting to connect to the Emerson DeltaV OPC Server (OPC.DeltaV.1) TopView applications in v7.0 and later are ...
RSLinx OPC Server error "Class is not licensed for use"
After upgrading to TopView version 7.x we are aware of an issue where The TopView Configurator is able to successfully connect to the local RSLinx OPC Server The TopView Engine fails to connect to the local RSLinx OPC Server with error "Class is not ...
Unable to connect to iFix: "Requested operation requires elevation" - error 0x800702e4
Error 0x800702e4 is due to OPC's use of DCOM. The OPC Server is requiring a different elevation status than the one offered by the TopView Configurator upon launch. Even though TopView may be running under a user account that is part of the ...
Exele OPC Products and Hardening DCOM Changes (KB5004442)
Due to a vulnerability detailed in CVE-2021-26414, Microsoft released a security update in June 2021 which will change the level of DCOM security required between OPC Classic clients and remote OPC servers. Once implemented, this change will cause ...
ClearSCADA connection fails with: "Error: CheckConnectionToServer > error creating group : AddGroup failed with error"
If you receive an error connecting to ClearSCADA with the following error message: ClearSCADA can be set up to use OPC private security and require credentials for permissions to connect to the server and retrieve tag values. To connect, provide the ...
TopView OPC cannot connect as Service
This article is useful if TopView connects to your OPC server when run interactively, but cannot connect to remote OPC Server(s) when you run TopView as a Service. Interactive applications (non-Service) run under the account of the logged in ...
Wonderware OPCENUM error 0x80040153
Note: the information below also exists as a PDF with screenshot images. Background If you install TopView OPC/SCADA on a Wonderware machine after installing the Wonderware OPC Server software, you may not be able to query to local OPC Servers ...