Mitsubishi Electric Melsec A Series, Руководство пользователя

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Table 6.1 Error Code List for AnNCPU (Continue)
Error
Message
Error
Code
(D9008)
CPU
States
Error and Cause Corrective Action
"SP. UNIT
DOWN"
(Checked at
the execution
of FROM and
TO
instructions.)
41 Stop
When the FROM or
TO instruction is
executed, access has been
made to the special function
module but the answer is
not given.
The accessed special
function module is
defective.
Since this is an accessed
special function module
error, consult Mitsubishi
representative.
"LINK UNIT
ERROR"
42 Stop The data link module is
loaded in the master
station. Remove the data link
module from the master
station. After correction,
reset and start from the
initialization.
"I/O INT.
ERROR"
43 Stop Although the interrupt
module is not loaded,
interruption has occurred. Since this is a hardware
error of a specific module,
replace the module and
check the defective module,
consult Mitsubishi
representative.
"SP. UNIT
LAY.
ERROR."
44 Stop (1) Three or more computer
link units are loaded with
respect to one CPU
module.(A1SCPU24-R2
is also counted as one
unit.)
(2) Two or more data link
modules are loaded.
(3) Two or more interrupt
units are loaded.
(4) A special function
module is assigned in
place of an I/O module,
or vice versa, at I/O
assignment of
parameters on
peripheral devices.
(5) The input/output
modules or special
function modules are
loaded at the
input/output numbers
exceeding the number
of input/output points, or
GOT is connected via
bus line.
(1) Reduce the computer
link modules to two or
less.
(2) Reduce the data link
modules to one or less.
(3) Reduce the interrupt
module to one.
(4) Re-set the I/O
assignment of
parameter setting by
use of peripheral
devices according to the
actually loaded special
function module.
(5) Review the input/output
numbers, and remove
the modules at the
input/output numbers
beyond the number of
input/output points or
GOT.