Mitsubishi 900 Series User Manual page 87

9 ERROR CODES AND ERROR MESSAGES
Error Error
Check Timing
Code Messages
SP. UNIT At CPU power ON/
2100
LAY ERR. At reset
2101
to
2103
2104
2105
2106
2107
2108
2109
9 - 12
Error detail
(1) In the parameter I/O allocation
settings, an intelligent function
module was allocated to a location
reserved for an I/O module. Or, the
opposite has happened.
(2) In the parameter I/O allocation
settings, a module other than CPU
(or nothing) was allocated to a
location reserved for a CPU module.
Or, the opposite has happened.
(3) A general-purpose switch was set to
the module with no general-purpose
switches.
In parameter I/O allocation settings, a
special function module was allocated
to a location reserved for an I/O module.
Or, the opposite has happened.
The modules more than those specified
in the PLC CPU specification are
installed.
At the MELSECNET/MINI auto refresh
parameter settings, the module
allocation that was set is different from
the actual module models at the station
numbers in the link system.
There are too many special function
modules that can use dedicated
instructions allocated (number of
modules installed).
(1) 5 or more QJ71LP21/BR11 have
been installed.
(2) 5 or more QJ71E71 (-B2) have been
installed.
(3) Identical network numbers or station
numbers exist in the
MELSECNET/10 network system.
Head X/Y set at the parameter I/O
allocation settings is also the head X/Y
for some other module.
(1) Network module A1SJ71LP21,
A1SJ71BR11, A1SJ71AP21 ,
A1SJ71AR21, or A1SJ71AT2 B
dedicated for the A2USCPU has
been installed.
(2) Network module A1SJ71QLP21 or
A1SJ71QBR11 dedicated for the
Q2AS has been installed.
Change the network module to
QJ71LP21 or QJ71BR11.
AJ71LP21 or AJ71BR11 for use with
the AnUCPU network module has been
installed.
The control system and standby system
module configurations are different
when a redundant system is in the
backup mode.
Cause and check point
Remedy
(1) Reset the parameter I/O allocation
according to the status of
installation of the intelligent
function module.
(2) Reset the parameter I/O allocation
according to the status of
installation of the CPU module.
(3) Reset the general-purpose switch
settings.
(4) Check the number of extension
stages and the I/O slot numbers.
(1) Reset the parameter I/O allocation
setting to conform with the actual
status of the special function
modules.
(2) Check the number of extension
stages and the I/O slot numbers.
(1) Check the number of installed
modules.
(2) Check the number of extension
stages and the I/O slot numbers.
Reset the parameter
MELSECNET/MINI auto refresh unit
module allocation setting so that it
conforms to the station number of the
module that is actually linked.
Reduce the number of special function
modules installed.
(1) Keep the number to 4 or fewer.
(2) Keep the number to 4 or fewer.
(3) Check the network numbers and
station numbers.
(1) Reset the parameter I/O allocation
setting to conform with the actual
status of the special function
modules.
(2) Check the number of extension
stages and the I/O slot numbers.
Change network module to QJ71LP21
or QJ71BR11.
Change network module to
AJ71QLP21 or AJ71QBR11.
Check the module configuration of the
standby system.
MELSEC-GOT
Corresponding
CPU
QCPU
QnACPU
QCPU
QnACPU
QnACPU
QCPU
QCPU
QnACPU
QCPU
QnACPU
Q4ARCPU
9 - 12