8-2
8.1 What to DO If Something Unusual Occurs (GT01 &
GT11)
Problem Cause Solution Related
Screen is
blank
1) Power is not on.
2) (When only lamp and message parts
are configured to the base screen) Value
of substitute reference device value does
not exist in substitute data.
1) Supply the power supply to unit as per
specifications.
2) Check the address of the substitute
reference device and the device values
on the PLC side.
→1.1
→GTWIN
HELP
Error code
[ER**]
appears at
the top right
of the
screen
An error has occurred in communication
between the GT main unit and an
external device (e.g. PLC).
Refer to <8.3. Troubleshooting Error
Codes>.
→8.3
Screen
displays [No
Screen data]
There is no base screen data in the GT
main unit. (Appears even when GT
configuration data exists.)
Transfer base screen data from GTW IN. →GTWIN
HELP
Screen
displays
[Screen No.
Error]
1) Screen settings from the PLC, the GT
main unit’s switch part or the auto-paging
indicate an unregistered screen number.
2) W hen bringing up the keyboard
screen during data input, an unregistered
keyboard screen number was specified.
3) GT configuration data and keyboard
screen data exist in the GT main unit, but
there is no base screen data.
1) Create and register screen content or
specify the correct screen number.
2) Create and register keyboard screen
or specify the correct keyboard number.
3) Transfer base screen data from
GTWIN.
→6.1
→GTWIN
HELP
→GTWIN
HELP
Screen
displays
[Memory is
Full]
The total capacity of transferred base
screen data exceeds the 384 kbyte
capacity of the GT01.
For the GT11, the maximum capacity is
1.375 Mbytes.
Delete part of the base screen data so
that the total capacity doesn’t exceed
384 kbytes
(GT01)/1.375 Mbytes(GT11). Data
capacity can be checked by going to
[View (V)]→[Memory Usage Conditions]
on GTW IN menu bar. When the data
capacity is not over the limit, invalid data
could possibly be remaining in the GT
main unit. When transferring data, do so
after deleting the screen.
→GTWIN
HELP
An
unspecified
screen
appeared/th
ere is
trouble when
switching
screens.
1) The screen specification in the PLC
screen setting, the GT main unit switch
part or the auto-paging is wrong.
2) The startup screen is specified in the
GT configuration settings (GTWIN).
3) An erroneous device or value is
specified in the first word of the basic
communication area word device.
1) Specify the correct screen number.
2) Check the start-up screen setting for
the GT configuration settings in GTWIN.
Delete unnecessary settings and re-
transfer configuration data.
3) Check the device content specified on
the PLC side in the first word of the basic
communication area. (Do not use the
basic communication area with ladder
programs.)
→6.1
→5.2.3
→3.2