123
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
401
Due to the error of the
control bus which
connects to special
function modules, the
FROM / TO
instruction cannot be
executed.
"CONTROL
-BUS ERR"
40
402
STOP
If parameter I/O
assignment is being
executed, special
function modules are
not accessible at initial
communication.
At error occurrence,
the head I/O number
(upper 2 digits of 3
digits) of the special
function module that
caused error is stored
at D9011.
Since it is a hardware
error of special function
module, CPU module or
base module, replace
and check defective
module(s). Consult
Mitsubishi representative
for defective modules.
411
Though an access was
made to a special
function module at
execution of the
FROM / TO
instruction no response
is received.
"SP.UNIT
DOWN"
41
412
STOP
If parameter I/O
assignment is being
executed, no response
is received from a
special function module
at initial
communication.
At error occurrence,
the head I/O number
(upper 2 digits of 3
digits) of the special
function module that
caused error is stored
at D9011.
Since it is hardware
error of the special
function module to which
an access was made,
consult Mitsubishi
representative.
Summary of Contents for Melsec A Series
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