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MELSEC-QnA
13 TROUBLESHOOTING
Table 13.1 Error code list (5/6)
Detectability Error code
(hexadecimal)
Error details Cause of error occurrence (details) Corrective action
Master station Local station
B801 1 Access code setting error
A non-existing access code/attribute was
set.
Set a correct access
code/attribute.
B802 2 Access code error
An access code that does not exist was
used.
Use the correct access code.
B803 1 Data points error
The number of data points were out of
range.
Set the number of data points
to within 1 to 960 bytes.
B804 1
Attribute definition error
Transient transmission
unsupported station
specification error
The attribute definition was invalid.
Alternatively, transient transmission was
performed even though the target station
does not support transient transmission.
Review the attribute definition.
Check the designation of the
target station number, as well
as the function version and
software version of the target
local station.
B805 1 Data points error
The number of data was out of range.
Set the range to within 1 to 100
when writing, and 1 to 160
when reading.
B807 1 Device No. error
The start device No. is out of range.
Or, the address was not a multiple of 16
when the bit device was accessed.
Correct the start device No..
Or, set the address to a multiple
of 16 when accessing the bit
device.
B80D 2 Setting range error
The specified combination (addresses
and points) exceeded the valid
processing range.
Set so that the number of
processing points does not
exceed the device range .
B814 2
File register capacity setting
error
The file register capacity was not
specified.
Specify the file register
capacity.
B815 2 Module mode setting error
A transient transmission was executed
when the target station was set to the I/O
mode.
Set to the intelli mode.
B823 Remote control mode error
The mode setting of the remote control
was incorrect.
Check the mode specification.
B901 E
2
PROM error
When a parameter registration request
(YnA) to E
2
PROM was executed,
E
2
PROM was out of order or exceeded
its write limit (10,000 times).
Replace the module.
B902
Error in data link startup by
E
2
PROM parameter
Data link start request by E
2
PROM
parameter (YnB) was executed even
though the parameter was not registered
in E
2
PROM.
Register the parameter to
E
2
PROM by a parameter entry
request (YnA).
B903 1 Transient request error
A transient request was issued to a
station that has not secured a
communication buffer area.
Secure a communication buffer
area with a parameter.
B904 1
Communication buffer size
setting error
The communication buffer size of the
corresponding station was out of range
when a dedicated instruction was
executed.
Set the communication buffer
size of the corresponding
station within the range.
B905 1 Transient data length error
When the dedicated instruction is
executed, the transient data length is
greater than the communication buffer
size of the corresponding station.
Make the communication buffer
size of the corresponding
station greater than the
transient data length.
B907 3
Execution disabled during data
link
E
2
PROM erasure request (YnD: ON) was
executed during data link (SB006E: ON).
Execute a data link stop using
SW0002.
B912 3 No registration area
The parameter registration request to
E
2
PROM (YnA: ON) was executed in
excess of a maximum of 127 registration
times.
Execute the E
2
PROM erasure
request (YnD: ON), switch
power off, or reset the CPU.
B913 3 E
2
PROM fault
The parameter registration request to
E
2
PROM (YnA: ON) was executed but
E
2
PROM is faulty.
Change the module.
BA19 Corresponding station error
The corresponding station that is being
tested stopped communication during
line test 1.
Check the cable and the
corresponding station.
BA1B All stations error
All stations stopped communications
during line test 1.
Check the cables.
1: Error code added to the function version B or later.
2: Error code added to the software version J (manufactured in Jan., 1998) or later.
3: Error code added to the software version E (manufactured in Aug., 2001) or later of the A1SJ61QBT11.