Omron NT20M Operation Manual page 63

Maintenance Mode
Host Interface (NT600M-LK201)
Host Interface (NT600M-LK202)
LCD Display Check
Buzzer Check
Backlight Check
6-3-3 PT Settings Check
58
Tool I/F Input Check
1B 24 15 20
RS-232C I/F Input Check
1B 51 30 33
Data which is received will be displayed in hexadecimal.
RS-422 I/F Input Check
1B 24 15 20
Data which is received will be displayed just as it is, in hexadecimal.
The lines of the display are reversed one at a time, starting from the top of
the screen. When the reversal is finished, then they are cleared one at a
time. When all of them have been cleared, the I/O Check Menu is returned
to. You can interrupt the check and return to the I/O Check Menu by pressing
the Buzzer Key, Up Key, and Down Key simultaneously while the check is in
progress.
By selecting "Buzzer" from the I/O Check Menu, the PT buzzer can be
checked. The buzzer should produce a continuous sound. To stop the buzz-
er, press the Buzzer Key. While the buzzer is sounding, it will not be possible
to change screens or stop the buzzer by pressing the Buzzer Key, Up Key,
and Down Key simultaneously. The NT2000M has a buzzer enable/disable
pin. If this pin is removed, the buzzer cannot sound.
If "Backlight" is selected, the cycle from white (1 s) to red (1 s) to off will be
repeated. To stop the backlight check, press the Buzzer Key, Up Key, and
Down Key simultaneously. The NT20M-DT121-EV2 and the NT20M-
DN121-EV2 do not have red backlights.
The status of the PT and Host Interface Unit can be displayed, as well as the
settings of switches. Select "PT Settings" from the Maintenance Mode Menu.
Section 6-3