Omron NT31 Series, Operation Manuals

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Inputting Character Strings Section 7-15
Checking the Record
There are two methods for checking the display history record: checking the re-
cord contents in the Maintenance mode of the NT31/NT31C, and displaying a
screen with the display history record function during operation.
S Displayed screens
In either case of order of occurrence or order of frequency, the number of records
that can be displayed on one screen of the NT31/NT31C is 14. To view those
records that are not displayed on the current screen, scroll the screen with the
“up” and “down” touch switch arrow keys.
If no display history is recorded, the message “Display history is not found.” is
displayed.
- Order of occurrence
The screen records are displayed in the order the screens were displayed.
Whether the records are displayed from the oldest first or from the newest first
is determined by memory switch setting at the NT31/NT31C.
- Order of frequency
The screen records are displayed in the order of frequency of display (number
of times displayed) of the corresponding screens.
S Checking the record in the Maintenance mode
Select the Maintenance mode from the System Menu and display the history re-
cord.
For details on the System Menu operation, refer to 6-11-4 “Displaying and Print-
ing the Display History Record” (page 219).
S Checking the record during operation
The display history record can be checked during operation by displaying either
of the following screens.
Screen No. 9001: Occurrence history screen
Screen No. 9002: Frequency history screen