Omron NT21 - SETUP MANUAL 10-2001 Setup Manual page 170

System Maintenance
Screen Data Memory
Check
Reference:
Check if the screen data memory is functioning normally.
S In the screen data memory check, a write test is performed on the screen data
memory. Since all the screen data in the NT21 is lost in this check, confirm that
the data has been backed up at the NT Support Tool or Memory Unit before
executing it.
S If writing to the screen data memory is disabled by the setting for System Set-
tings in the System Installer mode, it is not possible to execute a screen data
check.
S Once a screen data check has been started, it cannot be stopped.
Follow the menu operations from the Device Check Menu as shown below.
• During the check, the message Checking Now... is displayed.
• On normal completion of the check, the message Memory Check OK is dis-
played.
• If an error is discovered in the check, the message Memory Check NG is dis-
played.
After confirming the result of the check, press Quit. The NT21 returns to the DE-
VICE CHECK MENU screen.
Select Screen Memory.
Press Execute.
Section 6-11
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