Mitsubishi Electric MELSEC-Q Series User Manual page 137

Error
Error
Code
Massage
(D9008)
"SP.UNIT
41
DOWN"
"LINK
UNIT 42
ERROR"
"I/O INT.
43
ERROR"
"SP.UNIT
44
LAY.ERR."
Table 6.1 Error Code List (Continue)
Detailed
Error CPU
Code States
(D9091)
Though an access was
made to a special
function module at
411
execution of the
instruction no response is
received.
If parameter I/O
assignment is being
executed, no response is
STOP
received from a special
function module at initial
communication.
412
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.
Two of data link module is
Contin
— specified as master
ue
stations.
Though the interrupt
— STOP module is not loaded, an
interrupt occurred.
A special function module
is assigned as an I/O
module, or vice versa, in
441
the I/O assignment using
parameters from the
peripheral device.
There are 9 or more
special function modules
(except the interrupt
442
module) which can
STOP
execute interruption to
the CPU module loaded.
There are 2 or more data
443
link modules loaded.
There are 7 or more
modules such as a
444 computer link module
loaded to one CPU
module.
Error and Cause
/
FROM TO
103
Corrective Action
Since it is hardware error
of the special function
module to which an
access was made,
consult Mitsubishi
representative.
Specify one of data link
module as a master
station and another as a
local station.
Since it is hardware error
of a module, replace and
check a defective
module. For defective
modules, consult
Mitsubishi
representative.
Execute I/O assignment
again using parameters
from the peripheral
device according to the
loading status of special
function modules.
Reduce the special
function modules (except
the interrupt module)
which can execute
interrupt start to 8 or less.
Reduce the data link
modules to 1 or less.
Reduce the computer link
modules to 6 or less.