20 - 28
20.3 ERROR MESSAGE AND SYSTEM ALARM
20.3.2 List of Error Message/System Alarm
486
Communication unit not
corresponded to set
communication driver.
The communication driver set in the Communication Setting
and the communication unit installed on the GOT do not
match.
1. Check whether the communication driver set in the
Communication Setting is correct.
2. Check whether any incorrect communication unit has
been installed on the GOT.
*1
487
Please turn on the PLC
and the GOT again.
Turn the power of the PLC and GOT on again.
488
Too many units mounted
on GOT. Reduce units.
Units are mounted on the GOT exceeding the maximum
number of mountable units.Check the number of units, and
remove unnecessary units.
*1
489
Inactive channel has been
selected at
Communication Settings.
Inactive channel No. has been set in the project data.
1. Check whether any unnecessary channel No. has been
set in the project data.
2. Check whether channel Nos. set in the project data are
set in the Communication Settings.
*1
490
Simultaneous mounting of
the units are not allowed.
Two or more units which cannot be mounted on the GOT
simultaneously are mounted.Check the mounted units, and
remove unnecessary units.
*1
491
Too many units mounted
on GOT. Reduce units.
Units are mounted on the GOT exceeding the maximum
number of mountable units.Check the number of units, and
remove unnecessary units.
*1
500
Warning! Built-in battery
voltage is low.
The voltage of the GOT built-in battery is decreased.
Replace the GOT built-in battery.
502
Warning! Backlight needs
replacement soon.
The dedicated GS is notifying that the backlight power on
addition time has reached 80% or more of the set time.
The GOT can be restored by executing the addition times
reset function after replacing the backlight. The GOT can also
be restored by turning off the notification signal manually. In
such a case, turn it OFF after setting a value greater than the
addition time.
503
Warning! Display section
needs replacement soon.
The dedicated GS is notifying that the display section power
on addition time has reached 80% or more of the set time.
The GOT can be restored by executing the addition times
reset function after replacing the display section. The GOT
can also be restored by turning off the notification signal
manually. In such a case, turn it OFF after setting a value
greater than the addition time.
504
Warning! Touch panel
needs replacement soon.
The dedicated GS is notifying that the touching count of the
touch key has reached 80% or more of the set count number.
The GOT can be restored by executing the addition times
reset function after replacing the touch key. The GOT can also
be restored by turning off the notification signal manually. In
such a case, turn it OFF after setting a value greater than the
addition times.
Error
code
Error message Action
Channel
No.
storage