Log History Report and Summary window
This report maintains a buffered history (LogHistory) of some of the messages that are generated by the system’s standard
output. These messages can be very helpful for troubleshooting problems at the system level. You can select the Log History
report to check the log history for recent messages.
NOTE: The Log History report you view from a Supervisor station are local to the Supervisor. The Log History report does not show
the records of the subordinate stations. You have to go to each individual subordinate station to view its log records.
Figure 89. Log History report and Summary window
This view opens when you click . You access this window from the main menu by clicking , followed by selecting an alarm history record and clicking the Summary button (
).
Buttons
In addition to the standard control buttons (Auto Refresh, Column Chooser, Filter, Manage Reports and Export), this report includes these control buttons:
- Summary opens the Summary window for the selected item, which shows how item properties are currently configured. Double-clicking
on any row in a table opens the Summary tab, which contains the same information as the Summary window.
Purge Config opens the Purge Config window for setting up when and how to remove history records from the database.
Columns
Log History columns and Summary window properties
| Column/Property | Description |
|---|---|
| Timestamp |
Reports when the record was written to the database.
|
| Log Name | Name of the log file. |
| Severity | Reports the significance of the event. A value of 1000 is severe. A value of 800 is a warning. A value of 600 provides information. |
| Message |
Describes how to handle an alarm.
|
| Exception | Reports the exception stack trace if Severity equals 1000. |