8 TROUBLESHOOTING
MELSEC-Q
8 - 80 8 - 80
*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.
Error
Code
(SD0)
*1
Error Contents and Cause Corrective Action
Corresponding
CPU
2125
• A module which the QCPU cannot
recognise has been installed.
• There was no response form the
intelligent function module/special
function module.
• Install a usable module.
• The intelligent function module/
special function module is
experiencing a hardware fault.
(Contact your local Mitsubishi
representative.)
QCPU
Rem
2126
CPU module locations in a multiple
CPU system are either of the following.
• There are empty slots between the
QCPU and QCPU/motion controller.
• A module other than the High
Performance model QCPU/Process
CPU (including the motion
controller) is mounted on the left-
hand side of the High Performance
model QCPU/Process CPU.
• Mount modules on the available
slots so that the empty slots will be
located on the right-hand side of the
CPU module.)
• Remove the module mounted on the
left-hand side of the High
Performance model QCPU/Process
CPU, and mount the High
Performance model QCPU/Process
CPU on the empty slot.
Mount the motion CPU on the right-
hand side of the High Performance
model QCPU/Process CPU.
Qn(H)
*12
QnPH
2150
In a multiple CPU system, the control
CPU of the intelligent function module
incompatible with the multiple CPU
system is set to other than CPU No.1.
• Change the intelligent function
module for the one compatible with
the multiple CPU system (function
version B).
• Change the setting of the control
CPU of the intelligent function
module incompatible with the
multiple CPU system to CPU No.1.
2151
Either of the following modules
incompatible with the redundant
system has been mounted in a
redundant system.
• MELSECNET/H
• Ethernet
Use either of the following modules
compatible with the redundant system.
• MELSECNET/H
• Ethernet
QnPRH
2200
There is no parameter file in the drive
specified as valid parameter drive by
the DIP switches.
• Check and correct the valid
parameter drive settings made by
the DIP switches.
• Set the parameter file to the drive
specified as valid parameter drive by
the DIP switches.
Qn(H)
QnPH
QnPRH
There is no parameter file at the
program memory.
Set the parameter file to the program
memory.
Q00J/Q00/Q01
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