Mitsubishi QJ71LP21 Reference Manual page 295

8 TROUBLESHOOTING
Error
Code Error Contents and Cause
*1
(SD0)
Automatic write to standard ROM was
performed on the CPU module that is
incompatible with automatic write to
standard ROM.
(Memory card where automatic write
to standard ROM was selected in the
boot file was fitted and the parameter
enable drive was set to the memory
card.)
2400
The file designated at the PLC file
settings in the parameters cannot be
found.
The Ethernet parameter that was
added for QnACPU, with the function
version "B," has been set to QnACPU
without the function version "B."
Program memory capacity was
exceeded by performing boot
operation or automatic write to
standard ROM.
2401
The file designated at the parameter
PLC RAS settings fault history area
has not been created.
*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being
stored.
*12 : This applies to the CPU module of function version B or later.
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Corrective Action
• Execute automatic write to standard
ROM on the CPU module which is
compatible with automatic write to
standard ROM.
• Using GX Developer, perform write
of parameters and programs to
standard ROM.
• Change the memory card for the
one where automatic write to
standard ROM has not been set, and
perform boot operation from the
memory card.
• Read the individual information of
the error using peripheral device,
check to be sure that the parameter
drive name and file name correspond
to the numerical values there
(parameter number), and correct.
• Create a file created using
parameters, and load it to the CPU
module.
Change to QnACPU with the function
version "B".
Delete the Ethernet parameter.
• Check and correct the parameters
(boot setting).
• Delete unnecessary files in the
program memory.
• Choose "Clear program memory" for
boot in the parameter so that boot is
started after the program memory is
cleared.
• Read the individual information of
the error using the peripheral
device, check to be sure that the
parameter drive name and file name
correspond to the numerical values
there (parameter number), and
correct.
• Check the space remaining in the
memory card.
MELSEC-Q
Corresponding
CPU
*12
Qn(H)
QnPH
QnPRH
QnA
*12
Qn(H)
QnPH
QnPRH
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