8-3
Problem Cause Solution Related
Screen
doesn’t
switch
1) No screen number has been written to
the screen setting area (the first word in
the basic communication area word
device) from the PLC.
2) The screen number to which you are
attempting to switch has already been
written from the PLC to the screen
setting area (the first word in the basic
communication area word device.)
1) Specify correct screen number.
2) Refer to [If the screen does not
change as expected] in 6.1.2. (Do not
use the basic communication area with
ladder programs.)
→6.1
Screen is
dim
1) The power voltage may be low.
2) the contrast is set too low.
3) The backlight is off due to the
[Backlight Auto-off] setting in the [Setup]
of the GT configuration settings in
GTWIN.
1) Check the capacity of the power
supply unit if it is enough for the GT’s
power consumption.
2) Bring up the system menu and adjust
the contrast.
3) Touching any area of the screen lights
that area. If a switch part is set on the
touched area, the area will not light even
if touched. To change the setting,
change the content of the backlight auto-
off settings.
→1.1
→5.2.7
→5.2.5
Backlight
goes off too
quickly
1)The backlight auto-off timer setting is
too short.
1) Change the backlight auto-off timer
setting.
→5.2.5
Date/time
display is
incorrect
1) The PLC’s internal calendar timer
used as a reference is incorrect.
1) Adjust by rewriting the value in the
PLC’s internal calendar timer.
→All PLC
manuals
Touch panel
doesn’t work
1) Valid conditions have been set for the
switch par, but those conditions have not
been met.
1) Check that the device status
conditions on the PLC side are valid.
→GTWIN
HELP
No operating
sounds are
heard when
the touch
panel is
pressed.
1) The [Switch Sounds] setting under
[Options] in the switch part attributes is
set to [Disabled].
2)The [Touch Sounds] setting under
[Setup] in the GT configuration settings
in GTWIN is set to [Disabled].
1) Change the setting to [Enabled].
2) Change the setting to [Enabled].
→GTWIN
HELP
→5.2.5
Nothing
happens for
about 10
seconds
after turning
on power.
Communication conditions of GT (COM.
port) and PLC differ.
Verify communication settings of GT and
PLC and then make them the same.
→5.2.2
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