Omron Programmable Terminals NT31 NT31C - Manual (Page 222)

6-11 Section System Maintenance
212
Check whether or not the touch switches function normally by following the
menu operation from the System Menu shown below.
Select Maintenance Mode.
Select I/O Check.
Select Device Check.
Select Touch Switch.
Press the touch switches displayed on the
screen. A touch switch is normal if it is dis-
played in reverse video while pressed.
Ver 3.10
To end the check, press the touch switch at the top right corner (NT31: displayed
in reverse video; NT31C: displayed in yellow). The NT31/NT31C will return to
the DEVICE CHECK MENU.
Checking Touch
Switches