Mitsubishi Electric MELSEC iQ-R Series User Manual page 126

Error code Error name
4249H Redundant system related
error
424AH Redundant system related
error
424BH Redundant system related
error
424FH Redundant system related
error
425AH Redundant system related
error
4269H Any other error
433CH Maintenance and inspection
error
4400H Security function error
4401H Security function error
4402H Security function error
4403H Security function error
4404H Security function error
4408H Security function error
4409H Security function error
440AH Security function error
440BH Security function error
440CH Security function error
440DH Security function error
440EH Security function error
4500H Remote head module error
4501H Remote head module error
4905H Any other error
4 TROUBLESHOOTING
124
4.7 Error Codes
Error details and cause
The request cannot be executed because the
system setting (control system or standby system)
has not been determined (the system has not been
started up as the redundant system).
The request cannot be executed because the PLC
No.1, PLC No.2, control system, or standby system
is set as a connection destination (request
destination module I/O number).
The request cannot be executed because system
switching is disabled because of the following
reasons:
• SM1646 (System switching by a user) is off.
The request cannot be executed because system
switching due to a different cause was executed
during execution of system switching by the
engineering tool.
The request cannot be executed because the
system has not operated as the redundant system
The remote RUN (function) cannot be executed.
The error was not cleared. (Error clear was
performed during execution of error clear.)
A file protected by a password has been opened
without unlocking the password.
• Read password authentication has failed when
required.
• The file password format is incorrect.
• Write password authentication has failed when
required.
• The file password format is incorrect.
Both passwords for reading and for writing that are
set upon Create, Change, Delete, or Disable do not
match the previous ones.
A file error was detected before or after performing
Create, Change, or Delete.
Password authentication failed when access was
required.
Password authentication failed when access was
required.
Password authentication failed when access was
required.
Password authentication failed when access was
required.
Password authentication failed when access was
required.
Password authentication failed when access was
required.
The security function was activated and password
authentication cannot be performed.
The request cannot be executed because the
system is in the redundant line configuration.
The system cannot be switched because the
network error is occurring in the remote head
module of the standby system.
The capacity of label area used exceeded its limit.
Action
Determine the control system or standby system
(start up the system as the redundant system
normally), and execute the request again. Or, do not
specify any connection destination system (request
destination module I/O number), and execute the
request again.
Do not specify any connection destination system
(request destination module I/O number), and
execute the request again.
Perform either of the following operations to enable
system switching, and execute the request again.
• Turn on SM1646 (System switching by a user).
Check that the systems are switched successfully. If
not, monitor SD1644 (Cause of system switching
failure), eliminate the error cause, and then execute
the function again.
Start up the system as the redundant system
normally, execute the function again.
Execute the function again after a while.
Execute again after a while.
If the same error code is displayed again, the
possible cause is a hardware failure of the target
module. Please consult your local Mitsubishi
representative.
Enter a correct password and perform password
authentication.
• Set a correct read password and perform
password authentication.
• Access the file with the correct method.
• Set a correct write password and perform
password authentication.
• Access the file with the correct method.
Set correct passwords for both reading and writing,
and perform password authentication.
• Initialize the drive including the target file by
initializing the memory.
• Write the target file to the programmable controller
again, and then register or cancel the file
password.
Set a correct password and perform password
authentication again.
Set a correct password and perform password
authentication again 1 minutes later.
Set a correct password and perform password
authentication again 5 minutes later.
Set a correct password and perform password
authentication again 15 minutes later.
Set a correct password and perform password
authentication again 60 minutes later.
Set a correct password and perform password
authentication again 60 minutes later.
Set a correct password and perform password
authentication again after a certain period of time.
The request cannot be executed because it is not
supported by the redundant line configuration.
Execute again after eliminating the network error in
the remote head module of the standby system.
Delete the unused global label definitions, compile
the program, and then write the program to the
programmable controller.