Table of Contents
Advertisement
Problem
Screen doesn't
switch.
Screen is dim.
Backlight goes off too
quickly.
Date/time display is
incorrect. (when using
the GT's internal
clock)
Date/time display is
incorrect. (when using
the PLC's calendar
timer)
Touch panel doesn't
work.
No operating sounds
are heard when the
touch panel is
pressed.
Cause
No screen number has been
written to the screen setting area
(the first word in the basic
communication area word device)
from the PLC.
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).
The backlight brightness in the
system menu is set low.
The backlight brightness of the
basic communication area may
be set low.
The backlight is off by the
Backlight Control (Auto Off)
function.
The backlight brightness of
GTWIN Configuration may be set
low.
The setting of "Backlight Control
(Auto-Off)" is too short.
The GT's internal clock is
incorrect.
A bettery is not mounted.
The battery has run down.
The PLC's internal calendar timer
used as a reference is incorrect.
Valid conditions have been set for
the switch part, but those
conditions have not been met.
The [SW Sound] setting under
[Option] in the switch parts
attribute is set to [Off].
"Enable Touch Sound" in [Basic
Setup] of GT Configuration is not
checked.
4.1 What to Do If an Error Occurs
Solution
Specify a correct screen number.
For the function switch, use the operation mode
"Value Set" to change the contents of the first
word in the basic communication area.
Adjust the brightness from the system menu.
Refer to the basic communication area map and
check the operation of the bit allocated to PLC.
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 setting of "Backlight Control
(Auto-Off)".
Select "System Setting" > "GT Configuration" >
"Basic Setup", and change "Backlight Brightness
Setting".
Change the set time of "Backlight Control (Auto-
Off)".
Adjust the clock from the system menu.
Attach a battery.
Replace the battery.
Adjust by rewriting the value in the PLC's internal
calendar timer.
Check that the device status conditions on the
PLC side are valid.
Change the setting to [On].
Check "Enable Touch Sound".
4-3
Advertisement
Table of Contents
