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LED Error Indicators
Section 12-3
12-3-2 Error Display for CPU Unit Errors
The indicator displays shown in the above table indicate errors that have
occurred in the CPU Unit. Check the Unit's installation status and causes for
the errors in the CPU Unit.
12-3-3 Error Display for PCU Errors
The indicator displays shown in the above table indicate that data in the PCU
is corrupted or the PCU's internal circuits have malfunction.
Data may be corrupted if the PCU power is interrupted while data is being
saved to the PCU's internal flash memory. Use PCU's SAVE DATA or the CPU
Unit's simple backup function to restore (read) data saved in the Memory Card
or perform another process to recover saved data.
If the error occurs again, the probable cause is a faulty PCU. Replace the
PCU.
Not lit
Lit
Not lit
Not lit
Not lit
Unit malfunction The internal circuits of
the PCU have malfunc-
tioned.
Replace the PCU.
Not lit
Lit
Lit
Not lit
Not lit
Unit recognition
error
The CPU Unit has not
recognized the PCU
correctly.
Replace the PCU.
Indicator status
Category
Probable cause of
error
Countermeasure
RUN
ERC
ERH
ERM
MLK
Lit
Flashing
Lit
Not lit
Not lit
CPU Unit error
The CPU Unit system
is not operating cor-
rectly.
Make sure that the
CPU Unit and PCU are
installed correctly, and
turn the power OFF
and ON again. If the
error occurs again,
replace the CPU Unit.
A PLC bus operation
error has occurred.
A fatal error has
occurred in the CPU
Unit.
Remove the cause of
the CPU Unit stopping.
Indicator status
Category
Probable cause of
error
Countermeasure
RUN
ERC
ERH
ERM
MLK
Indicator status
Category
Probable cause of
error
Countermeasure
RUN
ERC
ERH
ERM
MLK
Lit
Lit
Not lit
Not lit
Not lit
Data corrupted
The data saved in the
PCU is corrupted.
Transfer and save the
PCU data again, and
then restart the Unit or
turn the power OFF
and ON again.
Unit error
An error has occurred
in the internal circuits
of the PCU.
Replace the PCU.
Содержание CJ1W-NC271 - 12-2009
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Страница 22: ...xxii ...
Страница 58: ...30 Starting Operation Section 2 2 ...
Страница 244: ...216 Axis Operating Input Memory Areas Section 4 8 ...
Страница 264: ...236 Transferring Servo Parameters Section 5 3 ...
Страница 396: ...368 Linear Interpolation Section 9 7 ...
Страница 648: ...620 List of Error Codes Appendix D ...
Страница 674: ...646 Additional Functions for the CJ1W NCF71 MA Appendix F ...
Страница 684: ...656 Index ...
Страница 686: ...658 Revision History ...