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MELSEC-
A
10 TROUBLESHOOTING
Error code
(hexadecimal)
Error name Cause of error Error remedy
BB28 Sum check error
The received check sum is
incorrect.
•
Correct the registered frame's check sum designation.
•
Check the data received from the external device.
•
Noise may be the cause.
BB29
Special character
usage area
A special character that
cannot be used for the head
or end frame during frame
reception was designation.
•
Correct the reception head/end frame No. designation.
BB2A
ASCII
binary
conversion error
Data that cannot be
converted from ASCII to
binary was received.
•
Check the data received from the external device.
•
Noise may be the cause.
BB41 Command error
A command (frame) that
cannot be used with the R2
was used.
•
Correct the command (frame).
BB42
Reception frame
error
There is an error in the data
received by the R2.
•
Correct the access code, No. of processing points and
attribute, etc.
BB81
Head address
designation error
The value designated in the
transmission/reception area
head address designation
area of the buffer memory
is incorrect.
BB82
Assignment
designation error
The value designated in the
various assignment
designation area of the
buffer memory is incorrect.
BB83 Parameter error
The value designated in the
parameter area of the buffer
memory is incorrect.
•
Refer to the buffer memory list in section 3.7, and set
the correct data.
BB88
EEPROM function
designation error
A value other than 0 to 4
was designated for the
EEPROM function
designation (
R2
1C0H).
•
Correct the value designated for the EEPROM function
designation (
R2
1C0H).
BB89
User registration
frame No.
designation error
A value other than 1000 to
1199 was designated for
the user-registered frame
No. designation (
R2
1C1H).
•
Correct the value designated for the user-registered
frame No. designation (
R2
1C1H).
BB8A
Registration frame
byte size
designation area
A value other than 1 to 80
was designated for the
user-registered frame byte
size designation (
R2
1C7H).
•
Correct the value designated for the user-registered
frame byte size designation (
R2
1C7H).
BB8B
Registration frame
designated
contents error
A special character that
cannot be used in the user
registration frame was
used.
•
Correct the contents of the user registration frame.
BB8C
EEPROM write
error
An EEPROM write timeout
error occurred.
•
There may be a problem in the hardware, so contact
your nearest dealer or branch office.
BB8D
User registration
frame not
registered error
The designated user
registration frame No. has
not been registered.
•
Check whether the designated user registration frame
No. has been registered.
BB92
Transmission data
size over error
The transmission data has
exceeded the maximum
size of the transmission
data.
•
Make sure that the total of the transmission data size
during frame transmission is within 2048 bytes after JIS
conversion.