5.2 What to DO If Something Unusual Occurs (GT02/GT02L/GT05/GT12/GT32/GT32-E) Problem
Cause
Solution
Screen is blank 1) Power is not on. 1) Supply the power supply to unit as per
specifications.
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.
2) Check the address of the substitute reference
device and the device values on the PLC side.
Error code
[ER****] appears
at the top right of
the screen
An error has occurred in communication
between the GT and an external device
(e.g. PLC).
Refer to <Troubleshooting Error Codes>.
Screen displays
[No Screen data]
There is no base screen data in the GT.
(Appears even when GT configuration
data exists.)
Transfer base screen data from GTWIN.
Screen displays
[Screen No.
Error]
1) Screen settings from the PLC, the GT’s
switch part or the auto-paging indicate
an unregistered screen number.
1) Create and register screen content or specify
the correct screen number.
2) When bringing up the keyboard screen
during data input, an unregistered
keyboard screen number was specified.
2) Create and register keyboard screen or specify
the correct keyboard number.
3) GT configuration data and keyboard
screen data exist in the GT, but there is
no base screen data.
3) Transfer base screen data from GTWIN.
- 4) Press [ESC] button to return to the previous
screen.
Screen displays
[Memory is Full]
The total capacity of transferred base
screen data exceeds the memory capacity
of the GT.
Delete part of the base screen data so that the
capacity doesn’t exceed the total capacity.
Data capacity can be checked by going to [View
(V)]→[Memory Usage Conditions] on GTWIN
menu bar. When the data capacity is not over the
limit, invalid data could possibly be remaining in
the GT. When transferring data, do so after
deleting the screen.
An unspecified
screen
appeared/there
is trouble when
switching
screens.
1) The screen specification in the PLC
screen setting, the GT switch part or
the auto-paging is wrong.
1) Specify the correct screen number.
2) The startup screen is specified in the
GT configuration settings (GTWIN).
2) Check the start-up screen setting for the GT
configuration settings in GTWIN. Delete
unnecessary settings and re-transfer
configuration data.
3) An erroneous device or value is
specified in the first word of the basic
communication area word device.
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.)
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.
1) Specify correct screen number.
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.)
2) Refer to Reference Manual.
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