74
1401
When PLC parameter I/O allocation
was being made, there was no return
signal from the special function module
during initial processing stage.(When
error is generated, the head I/O number
of the special function module that
corresponds to the common information
is stored.)
The CPU module, base unit and/or the
special function module that was
accessed is experiencing a hardware
fault. (Contact your local Mitsubishi
representative.)
QnA
1402
The special function module was
accessed during the execution of a
FROM/TO instruction set, but there was
no response.
(When an error is generated, the
program error location corresponding to
the individual information is stored.)
The CPU module, base unit and/or the
special function module that was
accessed is experiencing a hardware
fault.(Contact your local Mitsubishi
representative.)
QnA
1411
When performing a parameter I/O
allocation the intelligent function
module/special function module could
not be accessed during initial
communications.
(On error occurring, the head I/O
number of the corresponding intelligent
function module/special function
module is stored in the common
information.)
Reset the CPU module and RUN it
again. If the same error is displayed
again, the intelligent function module/
special function module, CPU module
or base unit is faulty. (Contact your local
Mitsubishi representative.)
QnA
1412
The FROM/TO instruction is not
executable, due to a control bus error
with the intelligent function module/
special function module.
(On error occurring, the program error
location is stored in the individual
information.)
QnA
1421
Hardware fault at the system
management module AS92R.
This suggests a system management
module AS92R hardware fault.
(Contact your local Mitsubishi
representative.)
Q4AR
1500
• A momentary power supply
interruption has occurred.
• The power supply went off.
Check the power supply. QnA
Error
Code
(SD0)
Error Contents and Cause Corrective Action
Corresponding
CPU
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