Hi,
I would like to take advantage of the above feature for phasing the migration of the SCADA system.
The deployment will use the tag providers in read-only mode to avoid adverse effects on the control system. The new SCADA will run in parallel with the existing system for a certain period of time to verify input data and test screen layouts, trends, reports, etc.
In the second phase of migration, the controls will be gradually introduced to the system, allowing for a very controlled approach to deployment. This will be done by moving the tags from read-only providers to Read/Write providers for each process area one at a time.
My concern is that if there are a number of expression tags trying to execute their logic, it could generate a lot of noise in the log files or even display some popup messages in the UI.
I was wondering if anyone has done this in practice and if they can provide advice?