I am troubleshooting a number of PI tags that are showing a "BAD" value. They are coming from an OPC-DA source and all read as good values when using the OSI OPC client app on the PI Interface. I have updated a number of the Instrument tags and m waiting to see if that resolves the issue. How long should the update take. Note we have about 9,900 OPC tags in the Server Instance, all allocated in scan classes of 800 maximum (the scan times vary from 1-60 seconds).