Unreliable values
- Last UpdatedMay 22, 2025
- 1 minute read
Some OPC servers return a value when a client connects to a point, even if the server does not yet have a valid value for the point. Some servers send an unreliable value with a status of GOOD, which results in this value being sent to Data Archive.
To screen out these unreliable values, use PI ICU to enable the Ignore First Value option on the Data Handling page (/if=Y).