Omron NT11 - 01-2004, User Manual

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77
Starting the Operation
Section 3-8
3-7-5 Selecting the History Data Property
The “History Data” memory switch is used to set whether to erase the history
data when the power supply is turned ON. The history data is backed up by a
capacitor in the NT11. (The backup time is 5 minutes minimum and 16 hours
at 25
°
C.) The factory setting is “Erase”.
Select the History Data property using the menu operation from the System
Menu as shown below.
To quit after setting the selection made, press the “ENTER” key. To quit with-
out setting the selection made, press any two function keys simultaneously.
• Keep: The history data will be held when the power supply is turned
OFF. If, however, a data history error occurs, e.g., as the result of
the capacitor being completely discharged, the system program
will delete the history data even if “Keep” is set.
• Erase: The history data will be deleted when the power supply is turned
OFF.
3-8 Starting the Operation
After completing the screen data transmission, connect the NT11 to the PLC
and start the operation.
!Caution
Carefully check the operation of all screen data and host programs before
using them. If incorrect, the system may operate unpredictably.
Otherwise the system may operate unpredictably.
Quit
Transmit Mode
Maintenance Mode
[System Menu] 1.0
PT Setting
I/O Check
Initialize Memory
Memory Switch
Backlight OFF: None
Auto-restart: No
[Memory SW1] Page:
History Data : Erase
Select “Maintenance
Mode” with the key,
then press “ENTER”.
Select “Memory Switch”
with the key, then press
“ENTER”.
Select “History Data” with
the key.
Pressing the [+/–] key
while “History Data” is
highlighted will cause the
selection for this item to
alternate between “Keep
and “Erase”.