Mitsubishi MELSEC LJ71C24, User Manual

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15 TROUBLESHOOTING
Error code
(Hexa-
decimal)
Error
Error Contents Signal name Corrective action
There is an error in the designation of the user frame
number.
•
Recheck the user frame number.
•
Designate the registered user frame number.
•
Register the designated data for initialization.
7FE1
H
There is an error in the designation of the output head
pointer.
•
Designate the output head pointer in the range of 1
to 100.
•
Designate the position (n-th position) where the data
for initialization number is designated.
•
Designate the data for initialization number at the
designated position
(n-th position).
7FE2
H
There is an error in the designation of the output frame
number.
•
Designate a registered data for initialization number
within the range of the designated number of
outputs from the location of the output head pointer.
7FE3
H
There is an error in the designation of the number of
registered data bytes.
•
Designate the data for initialization in the range of 1
to 78.
•
Designate 80 for the data for connection.
7FE4
H
There is an error in the data for connection.
•
Recheck the message length of the message for
notification.
7FE5
H
There is an error in the designation of the no-
communication interval time.
•
Designate the no-communication interval time in the
range of 0 to 120.
7FE8
H
The number of remote password mismatch exceeded
the value designated at the address 200D
H
.
•
Clear the Accumulated count of unlock process
abnormal completion processing (address: 22FC
H
)
to 0.
7FE9
H
Modern function
error
Callback denial exceeded the value designated at the
address 2002
H
.
CHn ERR.
•
Clear the callback denial accumulated count
(address: 22F1
H
) to 0.
1 Take corrective actions in the following procedure.
1) Check whether the C24, power supply module, and CPU module are installed
correctly.
2) Check whether the operating environment of the C24 is within the general
specifications range of the CPU module.
3) Check whether the power supply capacity is sufficient or not.
4) Check whether the hardware of the C24 and CPU module are normal
according to the manuals of the corresponding modules.
If any module is faulty, please consult your local Mitsubishi service center or
representative.
5) If the problem cannot be solved through the above steps, please consult your
local Mitsubishi service center or representative, explaining a detailed
description of the problem.