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Error
Code
Error Contents and Cause
(SD0)
• There is a program file that uses a
device that is out of the range set in
the PLC parameter device setting.
• After the PLC parameter setting is
changed, only the parameter is
2500
written into the PLC.
After the index modification of the PLC
parameter is changed, only the
parameter is written to the PLC.
There are multiple program files
although "none" has been set at the
PLC parameter program settings.
2501
• There are three or more program
files.
• The program name differs from the
program contents.
The program file is incorrect.
Alternatively, the file contents are not
those of a sequence program.
2502
The program file is not the one for the
redundant CPU.
2503
There are no program files at all.
Two or more SFC normal programs or
control programs have been
designated.
2504
There are two or more SFC programs.
*3
The function version is B or later.
*4
The function version is A.
*5
The module whose first 5 digits of serial No. is 04101 or later.
*6
The module whose first 5 digits of serial No. is 09012 or later.
*7
The Universal model QCPU except the Q02UCPU.
Corrective Action
• Read the common information of the
error using the peripheral device,
check to be sure that the parameter
device allocation setting and the
program file device allocation
correspond to the numerical values
there (file name), and correct if
necessary.
• If PLC parameter device setting is
changed, batch-write the parameter
and program file into the PLC.
When the index modification of the PLC
parameter is changed, batch-write the
parameter and program file into the
PLC.
Edit the PLC parameter program setting
to "yes". Alternatively, delete unneeded
programs.
• Delete unnecessary program files.
• Match the program name with the
program contents.
Check whether the program version
is
.QPG, and check the file
contents to be sure they are for a
sequence program.
Create a program using GX Developer
or PX Developer for which the PLC type
has been set to the redundant CPU
(Q12PRH/Q25PRH), and write it to the
CPU module.
• Check program configuration.
• Check parameters and program
configuration.
Reduce the SFC programs to one.
162
Corresponding
CPU
QnU
QnA
Qn(H)
QnPH
QnPRH
QnU
Q00J/Q00/Q01
QnPRH
QnA
Qn(H)
QnPH
QnPRH
QnU
Q00J/Q00/
*3
Q01
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