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MELSEC-Q
APPENDICES
Error code
(hexadecimal)
Error
item
Error description Countermeasure
4021
H
The specified drive memory does not exist or
there is an error.
Check the specified drive memory status.
4022
H
The file with the specified file name or file No.
does not exist.
Check the specified file name and file No.
4023
H
The file name and file No. of the specified file do
not match.
Delete the file and then recreate the file.
4024
H
The specified file cannot be handled by a user. Do not access the specified file.
4025
H
The specified file is processing the request from
a different location.
Forcefully execute the request forcibly.
Or reexecute the request after the processing from the
other location has ended.
4026
H
The keyword specification set in the
corresponding drive memory is required.
Access by specifying the keyword set in the
corresponding drive memory.
4027
H
The specified range exceeds the file range. Check the specified range and access within that range.
4028
H
The same file already exists.
Forcefully execute the request forcibly.
Or reexecute after changing the file name.
4029
H
The specified file capacity cannot be obtained.
Revise the specified file contents.
Or reexecute after cleaning up and reorganizing the
specified drive memory.
402B
H
The request contents cannot be executed in the
specified drive memory.
Do not execute a request for a specified drive memory in
which an error has occurred.
402C
H
CPU file
related error
Currently the request contents cannot be
executed.
Reexecute after the free wait time has passed.
4030
H
The specified device name cannot be handled. Check the specified device name.
4031
H
The specified device No. is outside the range. Check the specified device No.
4032
H
There is a mistake in the specified device
qualification.
Check the specified device qualification method.
4033
H
CPU device
specified error
Writing cannot be done because the specified
device is for system use.
Do not write the data in the specified device, and do not
turn on or off.
4040
H
The request contents cannot be executed in the
specified intelligent function module.
Do not conduct a request for a specified intelligent
function module in which an error has occurred.
4041
H
The access range exceeds the buffer memory
range of the specified intelligent function
module.
Check the header address and access number of points
and access using a range that exists in the intelligent
function module.
4042
H
The specified intelligent function module cannot
be accessed.
Check that the specified intelligent function module is
operating normally.
4043
H
The intelligent function module does not exist in
the specified position.
Check the header I/O No. of the specified intelligent
function module.
4044
H
A control bus error has occurred.
Check that there is no error in the intelligent function
module or in the hardware of another module.
4045
H
The setting required to conduct simulation has
not been made.
Conduct a simulation setting.
4046
H
Intelligent
function
module
specification
error
The device header or number of points in the
simulation is not in 16point unit.
Check the device header No. or number of points and
correct them to 16 point units.