What To Do If Something Unusual Occurs - Panasonic GTWIN Reference Manual

GTWIN Reference Manual

6.6 What to do if Something Unusual Occurs

Solutions may depend on your GT model and its capabilities.
Problem
Screen is blank
Screen display:
[No Screen data]
Screen display:
[Screen No. Error]
Screen display:
[Memory is Full]
An unspecified screen
appears.
Trouble switching
screens.
Screen does not
switch
Screen is dim
Possible cause
Power is not on.
When only lamp and message parts are
configured on the base screen, the value
of replacement reference device does not
exist in replacement data.
There is no base screen data in the GT.
(Appears even when GT configuration data
exists.)
Screen settings from the PLC, the GT's
switch part or auto-paging indicate an
unregistered screen number.
When bringing up the keyboard screen
during data input, an unregistered
keyboard screen number was specified
GT configuration data and keyboard
screen data exist in the GT, but there is no
base screen data.
The total capacity of transferred base
screen data exceeds the memory capacity
of the GT (see GT Series User Manual.)
The screen specification in the PLC screen
setting, the GT unit switch part or the
auto-paging is wrong.
The startup screen is specified in the GT
configuration settings (GTWIN).
An erroneous device or value is specified
for the first word of the basic
communication area word device.
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 to by the PLC in the screen setting
area (the first word in the basic
communication area word device.)
The power voltage may be low.
The contrast is set too low.
6.6 What to do if Something Unusual Occurs
Possible solution
Supply power to unit as per specifications.
Check the address of the replacement
reference device and the device values on
the PLC side.
Transfer base screen data from GTWIN.
Create and register screen content or
specify the correct screen number.
Create and register keyboard screen or
specify the correct keyboard number.
Transfer base screen data from GTWIN.
Delete unnecessary base screens or parts
of the base screens.
You can check how much memory each
base screen requires (see p. 128).
Specify the correct screen number.
Check the start-up screen setting for the
GT configuration settings in GTWIN.
Delete unnecessary settings and
re-transfer configuration data.
Check the device content specified on the
PLC side for the first word of the basic
communication area. (Do not use the basic
communication area with PLC programs.)
Specify 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 (see p. 24).
Check whether the capacity of the power
supply unit is sufficient for the GT unit.
Bring up the system menu (see p. 59) and
adjust the contrast.
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