GT10/GT30
Troubleshooting
160
9.2 What to Do If Something Unusual Occurs (GT30)
Problem Cause Solution Related
Buzzer
sounds
continuously
Bit F of the first word in the basic com-
munication area bit device is set to ON.
Set the F bit to OFF on the PLC side.
(Do not use the basic communication
area with ladder programs.)
P.143 toP.144
Backlight
color
changes /
flashes
Bits C and D, of the first word (backlight
flashing setting) in the basiccommunica-
tion area bit device are set to ON.
Perform correct bit operations on the
PLC side. (Do not use the basic commu-
nication area with ladder programs.)
P.143 toP.144
Cannot
transfer data
from GTWIN
1)The screen transfer cable is not con-
nected.
2)The PC and GT30 COM. port are con-
nected.
1)Confirm that the screen transfer cable
is correctly and firmly connected.
2)Connect to TOOL port with screen
transfer cable.
GTWIN HELP
* Screen is
blank (power
supply and
substitution
settings
above are
correct)
*An
incorrect
screen is
displayed
(error codes
and
erroneous
date and
time items
noted above
do not
apply)
* Switch
doesn’t work
(grid and
validity
settings
noted above
are correct)
An error has occurred in the GT30 sys-
tem.
1)After confirming the safety of the de-
vice, etc., turn off the power supply
and then turn it on again. The GT30
CPU will be reset.
2)If 1) produces no change, bring up the
system menu and initialize the
memory (F-ROM), then transfer data
again from GTWIN to the GT30.
CAUTION:
When doing this, all base screen data,
GT30 setting data, keyboard screen
data, and bitmap data will be lost. Be-
fore doing this, make sure all data has
been backed up.
3)If 2) produces no change, set the op-
eratingmodesetting switches 2, 3and
4 on the rear of the GT30 to ON and
reset the power supply.
CAUTION:
Whendoingthis,allofthecontents will
revert to those in effect at the time of
shipping, and all of the GT30 memory
contents will be cleared. Before doing
this, make sure all data has been
backed up.
P.130
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