Omron NT20S-ST121B-EV3 User Manual page 142

System Maintenance
Checking the Screen Memory
[ I/O CHECK MENU ]
Quit
LED Check
Buzzer
Touch Switch
Data Memory
The "RUN" LED on the front face of the NT20 will flash. Flashing cycle is about
1 s (500 ms ON and 500 ms OFF).
• To quit the LED check, press the "EXIT" touch switch. The NT20 will enter
the I/O CHECK MENU.
Check the screen memory by using the menu operation from the System
Menu as described below.
Note When the screen data memory is checked, the memory is initialized and all
the screen data is lost. Check that the screen data has been backed up using
the Support Tool before executing a screen data memory check.
[ SYSTEM MENU ]
Quit
Transmit Mode
Maintenance Mode
[ MAINTENANCE MENU ]
Quit
PT Setting
I/O Check
Init. Memory
Memory Switch
Select "LED Check".
LCD Display
Comm. Check
Select "Maintenance Mode".
Select "I/O Check".
DIP-SW Status
Section 3-9
121