8 - 10
8.2 Error Codes and System Alarm List
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.
• Check whether the communication driver set in the Communication Setting is
correct.
• 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.
• Check whether any unnecessary channel No. has been set in the project data.
• Check whether channel Nos. set in the project data are set in the Communication
Settings.
*1
492
Unusable communication units are
mounted.
Unit unusable for GOT is installed.
Remove the unusable unit.
*1
493
Installation of extension units may be
inappropriate.
Check if the extension units are securely mounted on the GOT.
497
Failed to start communication
driver(s).
Install the communication driver(s) again.
500
Warning! Built-in battery voltage is
low.
The voltage of the GOT built-in battery is decreased.
Replace the GOT built-in battery.
506
Warning! Backlight needs
replacement.
The dedicated GS is notifying that the backlight power on addition time has reached
the set time or more.
Please consult your local Mitsubishi service center or representative.
The GOT can be restored by executing the addition times reset function. 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.
510 Clock data input out of range
The value that is input as clock data is out of the input enabled range.
In this case, the input value is not accepted.
Confirm the input range of the value to be input as clock data, and input the proper
value again.
522
Unnecessary file deleted to create
new file.
The old file of different contents has been deleted and a new file has been created.
Note that the old file is deleted and the new file is created if the file of the same name
with different contents exists when creating files.
523
The read alarm log file has a different
number of alarm points.
When the alarm settings (such as the number of alarm points and hierarchies) are
changed, alarm log files before the change are imported and alarms are collected
with the new settings.
Therefore, different alarms may be displayed before and after the alarm setting
change.
Delete alarm log files as necessary.
525
Unable to read/write alarm log files
under different projects.
Unable to read the alarm log file saved by the different project.
Confirm the alarm log file and where to store the alarm log file.
526 File conversion failed.
The file specified for the file conversion does not exist.
Check the settings for specifying a file to be converted.
527 Insufficient SRAM capacity.
The capacity for the SRAM user area is insufficient.
Confirm the available memory in the SRAM user area.
528
Error in SRAM.
Failed to write data.
The error may be caused by a failure in the GOT main unit.
Contact your local Mitsubishi representative.
529
Data error in SRAM. Check the
battery life.
Error in SRAM data due to battery voltage low, etc.
Confirm the battery status.
535 Cannot open image file. Confirm whether any file exists in the SD card or USB memory.
536 Image file error or invalid file format.
• Confirm whether image files in the SD card or USB memory are normal.
• Confirm whether any image file of invalid format is stored.
562
I
n
stall the font appropriate for the
specified system language.
No font appropriate for the system language specified at the system language
switching is installed.
Install the appropriate font.
565
Files for the extended system
application are missing.
Install again system application (extended function) that you failed to execute.
571
Capacity shortage of user memory
(RAM)
There is no empty area/space in D drive.
Format the D drive in the memory to secure free area.
Error
code
Error message Action
Channel
No. storage
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