Omron NT20M Operation Manual page 61

Maintenance Mode
6-3-2 I/O Checks
Function Key Check
Touch Switches (DT-type
PTs)
External Function Key Input
Check
56
In the Maintenance Mode Menu, use the Up and Down Keys to move the bar
cursor to I/O Check. When you then press the Enter Key, the following menu
will be displayed.
I/O CHECK MENU
Quit
Function Key
Touch Switch
Comm. Check
Move the bar cursor to the item you want to check, and then press the Enter
Key.
F1 F2 F3
F9 F10 F11
F17 F18 F19
F25 F26 F27
F33 F34 F35
F41 F42 F43
F49 F50 F51
F57 F58 F59
The operation of the function keys can be checked if a 12-key Function Key
Unit is connected. Press a function key. If the number of that key is displayed
in reverse video on the screen, then it is operating properly. Key numbers are
not transmitted to the host during the check operation. Up to two keys can be
pressed simultaneously.
The NT20M-FK210 has 12 standard function keys, so you can use F1 to
F12.
To return to the I/O Check Menu, press the Buzzer Key, Up Key, and Down
Key simultaneously.
A touch switch operation check can be carried out for PTs with touch panels (i.e.,
DT-type PTs) by pressing each switch displayed on the screen. If a given switch
is displayed in reverse video after being pressed for approximately 0.5 second,
then that switch is okay. If "key input sound" is set to ON in the Memory Switch
Menu in Maintenance Mode, then the buzzer sounds simultaneously with the
reverse video display. The switch numbers are not transmitted to the host.
To return to the I/O Check Menu, press the Buzzer, Up, and Down system keys
simultaneously.
When external input terminals turn ON, the corresponding function keys are dis-
played in reverse video. When a 12-key Function Key Unit is connected, F1
through F12 correspond to IN0 through IN11.
LCD Display
Buzzer
Backlight Check
F4 F5 F6
F12 F13 F14
F20 F21 F22
F28 F29 F30
F36 F37 F38
F44 F45 F46
F52 F53 F54
F60 F61 F62
Section 6-3
F7 F8
F15 F16
F23 F24
F31 F32
F39 F40
F47 F48
F55 F56
F63 F64