Mitsubishi MELSEC L Series User Manual page 173

Error
Error Contents and Cause
Code
[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
*1 CPU operations when an error occurred can be determined with a parameter. (LED indication varies according to the
CPU status.)
*6 Intelligent function module operations when an error occurred can be selected with a parameter from either to stop or
continue.
*7 This applies when the function version is A or later.
*8 This applies when the function version is B or later.
*10 This applies when the first five digits of the serial number is "04101" or later.
*15 This applies when the first five digits of the serial number is "09102" or later.
*17 This applies when the first five digits of the serial number is "10042" or later.
*18 This applies to the Universal model QCPU except for the Q00UJCPU.
*19 This applies to the Universal model QCPU except for the Q00UJCPU, Q00UCPU, and Q01UCPU.
*20 This applies to the Universal model QCPU except for the Q00UJCPU, Q00UCPU, Q01UCPU, and Q02UCPU.
*21 This applies to the Built-in Ethernet port QCPU.
*26 This applies when the first five digits of the serial number is "13012" or later.
*28 This applies when the first five digits of the serial number is "13072" or later.
*31 This applies when the first five digits of the serial number is "13102" or later.
Corrective Action
• 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, explaining a
detailed description of the problem.)
• Ensure that the display unit is securely
attached to the CPU module.
• Reset the CPU module and run it again. If the
same error code is displayed again, the cause
is a failure of the CPU module or display unit.
(Please consult your local Mitsubishi
representative, explaining a detailed
description of the problem.)
APPENDICES
LED Status, Corresponding
CPU Status CPU
RUN:
On
ERR.:
On LCPU
CPU Status:
Continue
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