Automatic Diagnostics History

Use the Automatic Diagnostics History on an HMI device to review the historical diagnostics records showing diagnostics state changes. Automatic Diagnostics History
lists diagnostics state change records from the diagnostics log. A diagnostic log record appears in a row.

The Automatic Diagnostics History displays the history of diagnostics state changes available when you open the Automatic Diagnostics History
screen. Close and reopen the screen or select Refresh Alarm_History_Viewer_Refresh_button

to load the latest diagnostics state changes.

View Designer

retains diagnostics state history after:

Rebooting or powering off the HMI device.

Loading a new project.

Disconnecting a controller from the HMI device.

Replacing a controller.

Having a controller recover from a fault.

Downloading a new program from a controller connected to the HMI device.

Clearing the diagnostics log on a controller connected to the HMI device.

TIP:

In the rare case of the diagnostics history database being corrupted, the operator does not see any records in the Automatic Diagnostics History viewer. Diagnostic state changes still occur. If you do not see any records, remote the HMI device.

PanelView

terminals display up to 1,000 historical diagnostics state changes. This limit does not change with the number of controllers connected to the

PanelView

terminal. After exceeding the limit, new records replace the oldest diagnostics records.