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20. TROUBLESHOOTING
20.2 Error Message and System Alarm
480
Communication channel not set.
Set channel number on Utility.
Channel (CH.No.1 to 2) to communicate with a controller is not set.
• After setting the Communication Settings on the GT Designer3,
download it to the GOT.
• Change the channel assignment in the Communication Setting on the
utility.
*1
486
Communication unit not
corresponded to set
communication driver.
The communication driver set in the Communication Setting and the
communication built into the GOT do not match.
• Check whether the communication driver set in the Communication
Setting is correct.
*1
487
Please turn on the PLC and the
GOT again.
Turn the power of the PLC and GOT on again.
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
500
Warning! Built-in battery voltage
is low. The voltage of the GOT built-in battery is decreased.
Replace the GOT built-in battery.
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.
520 Insufficient Flash ROM capacity
The capacity for the buffering area is insufficient in the build in flash
memory
• Confirm whether there are no mistakes in specified buffering area size.
521
Insufficient user memory (RAM)
capacity
The capacity for the buffering area is insufficient in the user memory
(RAM)
• Confirm whether there are no mistakes in specified buffering area size.
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.
524
Device writing error.
Correct device. Error occurred while writing in the device.
Correct the device.
525
Unable to read/write alarm log
files under different projects. Unable to read the alarm log file saved by the different project.
Confirm where to store the alarm log file and 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.
528
Error in SRAM. Failed to write
data.
The error may be caused by a failure in the GOT main unit. Please
consult your local Mitsubishi (Electric System) Service center or
representative.
529
Data error in SRAM.
Check the battery life. Error in SRAM data due to battery voltage low, etc.
Confirm the battery status.
530
Improper monitor device.
Confirm monitor channel.
The channel of the specified monitor target does not exist or the channel
is not the monitor target.
Confirm the monitor target channel of the screen data.
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.
Error
code
Error message Action
Channel No.
storage