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Using the Display History Function
Section 8-9
- Display in the order of occurrence (screen No. 9001)
- 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 connected to the
NT31/NT31C.
[Setting]
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 NT31/NT31C.
[Operation]
(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 control
area, change the status of bit 1 in the 4th word (word n + 3) from the beginning
of the PT status control area to “11” (ON).
After initializing the alarm history record data by the operation at the PT status
control area, return the status of bit 11 to “0” (OFF).
(2) Display the display history confirmation screen from the System Menu.
The recorded display history record data is displayed.
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