Find malfunctioning points

The Stale and Bad Points tool identifies points that have not received data for a long time or that have current values representing error or bad conditions, such as I/O timeout, PtCreated, bad input, and Shutdown.

When you find bad or stale points, research the reason for the condition. Some possible scenarios are:

• No network connection between the Data Archive server and the interface.

• The interface computer has been shut down or has lost connection with the device.

• Someone has changed the point attributes.

If point values are stale or bad for no known reason, you should immediately determine the cause.

When you find points that are no longer useful, such as points that represent data from obsolete equipment, decommission them.