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System Maintenance
3-9
System Maintenance
3-9-1 Using the Display History Recording Function
Recording Display History
Display History Recording Format
Maximum Number of Screens to be Recorded
Confirming Screen Data Recorded
100
The NT30/30C has self-maintenance functions, such as display history record-
ing, I/O check and PT setting display.
The display history recording function is used to record the display sequence and
frequency of screens during operation. The data recorded can be displayed and
confirmed on the system screen.
Display history is recorded in the following procedure:
Setting screen attributes
To create a screen, of which display history will be recorded, on the NT-series Sup-
port Tool, set display history recording attributes to it. Register a message describ-
ing display history with not more than 16 characters (note that although 24 charac-
ters can be input using the NT-series Support Tool, only the first 16 are valid).
The display history can be recorded if the display history recording attributes for the
screen have been set. For further information, refer to the NT-series Support Tool
for Windows Operation Manual (V061).
Initializing memory for display history recording
Prior to recording, initialize the memory for display history recording
(refer to page 82).
Recording display history
When the screen with display history recording attributes requested from the PC
appears during operation, the display history will be recorded in the system.
Display history includes the following items related to the screen displayed:
• Screen number
• Date and time of display
• Message outlining screen data
In order of occurrence: Up to 1,023 screens can be recorded regardless of the
In order of frequency:
Since the data recorded is retained by the battery, it will not be lost even if the
power to the system is turned OFF.
There are two ways to confirm screen data recorded: by the maintenance mode,
and by displaying the screen by the screen data recording function during opera-
tion.
Recorded data can be displayed in order of occurrence or frequency.
screen number.
Up to 1,023 screens can be recorded and number of
times each screen is displayed can be recorded up to a
maximum of 255.
Section
3-9
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