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Table 6.3 Error Code List for AnUCPU (Continue)
Error
Error
Code
Massage
(D9008)
"LINK UNIT
42
ERROR"
"I/O INT.
43
ERROR"
"SP.UNIT
44
LAY.ERR."
Detailed
Error
CPU
Code
States
(D9091)
STOP
(1) Either data link
(2) There are 2 link
STOP
Though the interrupt
module is not loaded,
an interrupt occurred.
441
STOP
A special function
module is assigned as
an I/O module, or vice
versa, in the I/O
assignment using
parameters from the
peripheral device.
442
There are 9 or more
special function
modules (except the
interrupt module) which
can execute
interruption to the CPU
module loaded.
443
There are 2 or more
data link modules
loaded.
444
There are 7 or more
modules such as a
computer link module
loaded to one CPU
module.
Error and Cause
module is loaded to
the master station.
modules which are
set to the master
station (station 0).
124
Corrective Action
(1) Remove data link
module from the
master station.
(2) Reduce the number
of master stations to
1.
Reduce the link
modules to 1 when
the 3-tier system is
not used.
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.

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