3-9SectionUsing the Display History Function
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Display In the Order of Frequency (Screen No. 9002)
3. It is possible to display the previous and the next page by pressing the ↓ and
↑ keys.
4. To end the display, press the Quit touch switch.
Displaying the Confirmation Screen from the System Menu
The recorded display history record data can be confirmed from the System
Menu. It is possible to print the display history record data using a printer con-
nected to the NT31/NT31C or NT631/NT631C.
When creating a screen using the Support Tool, tick the check box of the History
property of the screen to be recorded in the display history.
To display the alarm history in the order of occurrence, set the display order
(From Old Data/From New Data) of the record data using the Hist. Disp. Method
memory switch of the PT.
Operation
1, 2, 3... 1. Initialize the recorded display history record data as needed.
To initialize the alarm history record data using System Menu operation, se-
lect Alarm History on the MEMORY INIT. MENU screen.
To initialize the alarm history record data by operation at the PT status con-
trol area, change the status of bit 1 in the 4th word (word n + 3) from the be-
ginning of the PT status control area to 11 (ON).
After initializing the alarm history record data by the operation at the PT sta-
tus control area, return the status of bit 11 to 0 (OFF).
2. Display the display history confirmation screen from the System Menu. (The
following displays show screens from an NT31/NT31C PT.)
The recorded display history record data is displayed.
Display in the Order of Occurrence (Screen No. 9001)
Setting
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