Omron Programmable Terminals NT31 NT31C Setup Manual page 220

System Maintenance
210
S Once a screen data check has been started, it cannot be stopped.
Check the screen data memory by following the menu operation from the Sys-
tem Menu shown below.
• During the check, the message Checking Now... is displayed.
Ver 3.10
Select Maintenance Mode.
Select I/O Check.
Select Device Check.
Select Screen Memory.
Press Execute.
Section 6-11