Error Messages And Corrective Actions - Mitsubishi Electric GOT SIMPLE Series User Manual

Error messages and corrective actions

This section describes the error messages displayed when the MELSEC-FX list editor is executed, and corrective action.
Error message
Can not display while protected.
Can not operate while protected.
PLC parameter error.
PLC communications error.
PLC is running.
Can not write.
Step number is out of a range.
Not found.
Not found.
Step overflow.
Command error.
How to erase an error message
An error message is not erased even if the cause of the error is eliminated.
To erase an error message, touch a key on the MELSEC-FX list editor screen.
16 GOT SELF CHECK (DEBUG)
260
16.2 FX List Editor
Description
The all-operation protect, anti-plagiarism, or
incorrect write protect keyword is set.
An FX PLC parameter is defective.
The communication with the FX PLC is
defective.
A writing operation etc. has been made while
the FX PLC is running.
• The memory to write to is EPROM.
• The protect switch of the EEPROM is on.
The specified step number exceeded the
maximum number.
The specified command cannot be found.
The specified device cannot be found.
The program may exceed the available
space.
(Writing is not executed.)
An invalid command (non-existent
command) was specified.
Corrective action
• Check the protected operation.
• Clear the keyword protection or delete the keyword.
Page 256 Keyword
Set correct parameters in the FX PLC.
• Check the FX PLC, cable, and GOT for abnormality.
• Check whether the communication settings are correct or not.
Stop the FX PLC.
• Set other than EPROM for the memory to write to.
• Switch off the protect switch of the EEPROM.
Specify a step number below the maximum value.
Proceed to the next operation.
Proceed to the next operation.
Check the program memory space and delete commands to keep it
within the space.
Page 250 Deleting commands
Input the correct command.