Mitsubishi Electric Q26UD(E)HCPU User Manual page 357

Error
Error and cause
code
[REMOTE PASS.FAIL]
The count of remote password mismatches
reached the upper limit.
■Collateral information
2700
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
[SNTP OPE.ERROR]
Time setting failed when the programmable
controller was powered ON or reset.
■Collateral information
2710
• Common information: -
• Individual information: -
■Diagnostic timing
• When time setting function is executed
[KEY AUTHEN. ERR.]
• The security key set to the file is corrupted and
does not match the one set to the CPU module.
• The security key set to the CPU module is
corrupted and does not match the one set to the
2720
file.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset/STOP  RUN
[DISPLAY ERROR]
The display unit was attached or detached while
the CPU module is on.
■Collateral information
2900
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
[DISPLAY ERROR]
A failure was detected in the display unit. (in a
initial processing)
■Collateral information
2901
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
[DISPLAY ERROR]
A failure was detected in the display unit. (during
operation)
■Collateral information
2902
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
[CAN'T ACTIVATE]
A device required for the license authentication
does not exist.
■Collateral information
2998
• Common information: -
• Individual information: -
■Diagnostic timing
• When instruction executed
Corrective action
Check for illegal accesses. If any illegal
access is identified, take actions such as
disabling communication of the connection.
If it was identified not illegal, clear the error
and perform the following. (Clearing the error
also clears the remote password mismatch
counts.)
• Check if the remote password sent is
correct.
• Check if the remote password has been
locked.
• Check if concurrent access was made from
multiple devices to one connection by UDP.
• Check if the upper limit of the remote
password mismatch count is too low.
• Check if the time setting function is set up
correctly.
• Check if the specified SNTP server is
operating normally, or if any failure has
occurred on the network connected to the
specified SNTP server computer.
• Rewrite the file to the CPU module.
• The cause is a hardware failure of the CPU
module. Please consult your local
Mitsubishi representative.
• Do not detach the display unit during
operation.
• Ensure that the display unit is securely
attached to the CPU module.
• Reset the CPU module and run it again. If
the same error is displayed again, the CPU
module or display unit is faulty. Please
consult your local Mitsubishi
representative.
• Ensure that the display unit is securely
attached to the CPU module.
• Reset the CPU module and run it again. If
the same error is displayed again, the CPU
module or display unit is faulty. Please
consult your local Mitsubishi
representative.
• Ensure that the display unit is securely
attached to the CPU module.
• Reset the CPU module and run it again. If
the same error is displayed again, the CPU
module or display unit is faulty. Please
consult your local Mitsubishi
representative.
Please consult your local Mitsubishi
representative.
APPENDICES
LED status, Corresponding
CPU status CPU
RUN: On
ERR.:On QnU
LCPU
CPU Status:Continue
RUN: Off/On
ERR.:Flashing/On
QnU
LCPU
CPU Status:
*1
Stop/Continue
RUN: Off
ERR.:Flashing
QnUDV
CPU Status:Stop
RUN: On
ERR.:On
LCPU
CPU Status:Continue
RUN: On
ERR.:On
LCPU
CPU Status:Continue
RUN: On
ERR.:On
LCPU
CPU Status:Continue
RUN:Off
ERR.:Flashing
LCPU
CPU Status:Stop
A
*3
*3
*3
*3
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