Mitsubishi MELSEC-A A1SCPUC24-R2 User Manual page 141

Table 6.3 Error Code List for A2ASCPU(S1/S30) and A2USHCPU-S1 (Continue)
Error
Error
Code
Massage
(D9008)
"END NOT
EXECUTE"
24
(Checked at
execution of
the END
instruction.)
"MAIN CPU
26
DOWN"
"UNIT
VERIFY
ERR"
31
(Checked
continuously.)
Detailed
Error CPU
Code States
(D9091)
241 STOP
— STOP
Stop or
Continue
— (set by
para-
meter)
115
Error and Cause
Whole program of
specified program
capacity was executed
without executing the
instructions.
(1) When the
END
instruction was to be
executed, the
instruction was read
as other instruction
code due to noise.
(2) The instruction
END
changed to other
instruction code due
to unknown cause.
The main CPU is
malfunctioning or faulty.
Current I/O module
information is different
from that recognized
when the power was
turned on.
(1) The I/O module
(including special
function modules)
connection became
loose or the module
was disconnected
during operation, or
wrong module was
connected.
Corrective Action
(1) Reset and run
END
the CPU again.
If the same
error recurs,
Since this is
CPU hardware
error, consult
Mitsubishi
representative.
Since this is CPU
hardware error,
consult Mitsubishi
representative
Read detailed error
code using a
peripheral device
and check or
replace the module
which corresponds
to the data (I/O
head number).
Or, monitor special
registers D9116 to
D9123 using a
peripheral device
and check or
replace the
modules if
corresponding data
bit is "1".