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APPENDICES
A
Appendix 1 Error Codes
Appendix 1.4 List of error codes (2000 to 2999)
2700
[REMOTE PASS.FAIL]
The count of remote password mismatches
reached the upper limit.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
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.
RUN: On
ERR.:On
CPU Status:Continue
QnU
*3
LCPU
*3
2710
[SNTP OPE.ERROR]
Time setting failed when the programmable
controller was powered ON or reset.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• When time setting function is executed
• 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.
RUN: Off/On
ERR.:Flashing/On
CPU Status:
Stop/Continue
*1
QnU
*3
LCPU
*3
2720
[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
file.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset/STOP RUN
• Rewrite the file to the CPU module.
• The cause is a hardware failure of the CPU
module. Please consult your local
Mitsubishi representative.
RUN: Off
ERR.:Flashing
CPU Status:Stop
QnUDV
2900
[DISPLAY ERROR]
The display unit was attached or detached while
the CPU module is on.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
• 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.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
2901
[DISPLAY ERROR]
A failure was detected in the display unit. (in a
initial processing)
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• At power-on/At reset
• 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.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
2902
[DISPLAY ERROR]
A failure was detected in the display unit. (during
operation)
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• Always
• 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.
RUN: On
ERR.:On
CPU Status:Continue
LCPU
2998
[CAN'T ACTIVATE]
A device required for the license authentication
does not exist.
■Collateral information
• Common information: -
• Individual information: -
■Diagnostic timing
• When instruction executed
Please consult your local Mitsubishi
representative.
RUN:Off
ERR.:Flashing
CPU Status:Stop
LC
PU
Error
code
Error and cause Corrective action
LED status,
CPU status
Corresponding
CPU
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