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Error
Error name
code
3042H
User WDT
error
3044H
Program fault
3C00H
Hardware
failure
3C01H
Hardware
failure
3C02H
Hardware
failure
3C03H
Hardware
failure
3C0FH
Hardware
failure
3C10H
Hardware
failure
APPX
192
Appendix 1 Error Code List
Error details and cause
The user watchdog timer controlled by the
system has detected an error because the
C Controller module dedicated function
(CCPU_ResetWDT) was not executed
within the user watchdog timer setting time.
Or, an error occurred in the user program.
• The time set for the user watchdog timer
is too short.
• Tasks with the higher CPU usage rate is
in operation.
• A program causing an error in the
memory or stack was executed.
• Debugging has been performed with CW
Workbench connected online.
• Command was executed from Shell for
debugging.
• The following functions that increase the
CPU usage rate of the system task are
used.
(1) Mounting/unmounting the memory card
(2) Ethernet communication
(3) NFS server communication
The command in the script file cannot be
executed. (The syntax is incorrect, or no
command exists.)
A hardware failure was detected.
A hardware failure was detected.
• A hardware failure was detected.
• An invalid argument has been specified
with the C Controller module dedicated
functions for ISR.
A hardware failure was detected.
A hardware failure was detected.
A hardware failure was detected.
Corrective action
• Reset the CPU module.
• Lower the CPU usage rate of tasks with the higher
rate, or make them inactivated.
• Review the user program.
• Restart the C Controller module with CW
Workbench not connected online.
• Review the command executed from Shell.
• Set the user watchdog timer setting time longer
enough with consideration for the CPU usage rate
of the system task.
If an error still occurs, check the mounted modules,
and replace a defective module.
Check that the syntax of the script file is not incorrect
and a command exists.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code is
displayed again, the possible cause is a hardware
failure of the CPU module. Please consult your
local Mitsubishi representative.
• Check the event history, if major errors occur in
another CPU module, I/O module, or intelligent
function module, take measures according to the
error codes.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code is
displayed again, the possible cause is a hardware
failure of the CPU module. Please consult your
local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code is
displayed again, the possible cause is a hardware
failure of the CPU module. Please consult your
local Mitsubishi representative.
• Review the argument of the C Controller module
dedicated functions for ISR.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code is
displayed again, the possible cause is a hardware
failure of the CPU module. Please consult your
local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code is
displayed again, the possible cause is a hardware
failure of the CPU module. Please consult your
local Mitsubishi representative.
• Take measures to reduce noise.
• Reset the CPU module. If the same error code is
displayed again, the possible cause is a hardware
failure of the CPU module. Please consult your
local Mitsubishi representative.
Detailed
Diagnosti
informati
c timing
on
Always
Script
At power
position
ON or
information
RESET
Failure
Always
information
Failure
Always
information
Failure
At power
information
ON, RESET,
fixed cycle
processing
execution,
or interrupt
occurrence
Failure
Always, at
information
power-ON,
RESET, or
interrupt
occurrence
Failure
Always
information
Failure
At power
information
ON or
RESET
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