121
Table 6.3 Error Code List for AnUCPU (Continue)
Error
Massage
Error
Code
(D9008)
Detailed
Error
Code
(D9091)
CPU
States
Error and Cause
Corrective Action
"END NOT
EXECUTE"
(Checked
at
execution
of the END
instruction.)
24
241
STOP
Whole program of
specified program
capacity was executed
without executing the
END instructions.
(1) When the END
instruction was to be
executed, the
instruction was read
as other instruction
code due to noise.
(2) The END
instruction changed
to other instruction
code due to
unknown cause.
(1) Reset and run the
CPU again. If the
same error recurs,
Since this is CPU
hardware error,
consult Mitsubishi
representative.
"MAIN CPU
DOWN"
26
STOP
The main CPU is
malfunctioning or faulty.
Since this is CPU
hardware error, consult
Mitsubishi representative
"UNIT
VERIFY
ERR"
(Checked
continuousl
y.)
31
Stop or
Continu
e (set
by
parame
ter)
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.
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".
Summary of Contents for Melsec A Series
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