How To Read Error Codes - Mitsubishi Electric A800 Programming Manual

How to read error codes

If an error occurs when PLC function is RUN or during RUN, an error indication is generated by the self-diagnostic function,
and an error code and error step are stored in the special register. The error description and corrective action are as follows:
4.1
How to read error codes
When an error occurs, the error code can be read using a peripheral device.
For details on the operation method, refer to the operating manual of the peripheral device.
The error code, error name, error description possible cause, and corrective actions are as follows.
Error codes are stored in SD0, and the error steps are stored in SD4 to SD26.
Error code
(SD0)
1010 END NOT EXECUTE
2200 MISSING PARA.
2502 CAN'T EXE. PRG.
3000 PARAMETER ERROR
3003 PARAMETER ERROR
4000 INSTRCT. CODE ERR
4010 MISSING END INS.
4100 OPERATION ERROR
200
Error code list
Error name Error description possible cause
All programs in the program capacity
are executed without executing the
END instruction.
• After the END instruction was
executed, a different instruction
code was read due to noise, etc.
• The END instruction has changed to
a different instruction code for some
reason.
• There are no parameter files.
• The program file is not correct, or
the content of the file is not a
program.
• The content of the parameter
indicated by the error individual
information (SD16) is incorrect.
• The number of device points set in
the PLC parameter device setting is
not within the usable range.
• An undecodable instruction code is
included in the program.
• An unusable instruction is included
in the program.
• No END (FEND) instruction in the
program.
• Data that cannot be used in
instructions is included.
Corrective action
• Take measures against noise.
• Perform an inverter reset and go to the RUN
state again.
• If the same error is displayed again, a CPU
hardware error has occurred. Please contact
your sales representative and explain the
failure symptom.
• Set a parameter file.
• Check that the program file type is ***.QPG,
and check that the file content is a program.
• Read the error individual information with a
programming tool, check the parameter items
that correspond to the values (parameter
number) and correct them.
• Re-write the corrected parameters, reset the
power or reset the inverter.
• If the same error is displayed again, a CPU
hardware error has occurred. Please contact
your sales representative and explain the
failure symptom.
• Read the error individual information with a
programming tool, check the parameter items
that correspond to the values (parameter
number) and correct them.
• If the error occurs again after correcting the
parameter, a memory error has occurred in
the program memory. Please contact your
sales representative and explain the failure
symptom.
• Read the common error information with a
programming tool, check the error step that
corresponds to the value (program error
location) and correct it.
• Read the common error information with a
programming tool, check the error step that
corresponds to the value (program error
location) and correct it.
• Read the common error information with a
programming tool, check the error step that
corresponds to the value (program error
location) and correct it.