Applies To:
  • CitectSCADA 5.xx

I am commissioning a large project and sometimes there may be several engineers using DspInfoField() to check Tag information from different PC's on the network. The project database is all on a central file server. Sometimes the function seems to run very slowly and other times quite quickly. What is happening? 

DspInfoField() needs to access the project database, and if more than one person does this at once, then there can be a significant delay. The information is cached locally and so sequential accesses from the same client will be quite fast but if another client requests information then the data will need to be refreshed. With a large project this can take a longer than expected time.