643
Troubleshooting
Section 12-2
Note
Just as when a CPU error occurs, the RUN indicator will turn OFF and the
ERR/ALM indicator will light when a fatal error occurs. Connecting the CX-
Programmer, however, is possible for fatal errors but not for CPU errors. If the
CX-Programmer cannot be connected (online), a CPU error has probably
occurred.
12-2-5 Non-fatal Errors
A non-fatal error has occurred if both the RUN indicator and the ERR/ALM
indicator are lit during operation (i.e., in RUN or MONITOR mode).
■
CPU Unit Indicators
Information on the non-fatal error can be obtained from the Error Tab Page of
the CX-Programmer’s PLC Error Window. Take corrective actions after check-
ing error details using the display messages and the Auxiliary Area Error
Flags and error information.
• Errors are listed in the following table in order, with the most serious ones
first.
• If two or more errors occur at the same time, the most serious error code
will be stored in A400.
Errors Created with for FAL Instructions
A FAL instruction was executed in the program to create a non-fatal error.
■
Reference Information
Flash Memory Errors
POWER
Lit
RUN
Lit
ERR/ALM
Flashing
INH
---
BKUP
---
LNK/ACT
---
POWER
RUN
INH
LNK/ACT
BKUP
ERR/ALM
Probable cause
Possible remedy
The executed FAL number 001 to 511 will
be stored in A360 to A391. The number 4
will be added to the front of 101 to 2FF
(which correspond to executed FAL num-
bers 001 to 511) and the result will be
stored in A400 as error code 4101 to
42FF.
Check the conditions for executing FAL
instructions and remove any causes of
the user-defined error.
Error flag
FAL Error Flag, A402.15
Error code (A400)
4101 to 42FF
Error information
None
Probable cause
Possible remedy
A315.15 will turn ON when writing to the
internal flash memory fails.
Replace the CPU Unit when the internal
flash memory has been written to more
than 100,000 times.
Содержание CP1L-EL20DR-D
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Страница 22: ...xxii...
Страница 34: ...xxxiv Software Licenses and Copyrights 7...
Страница 178: ...144 Connecting the CX Programmer Section 5 1 Click the Connect button to connect and then connection online is completed...
Страница 192: ...158 Trial Operation and Debugging Section 5 3...
Страница 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Страница 666: ...632 Trouble Shooting Section 11 7...
Страница 696: ...662 Standard Models Appendix A...
Страница 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Страница 836: ...802 PLC Setup Appendix G...
Страница 838: ...804 TCP Status Transitions Appendix H...
Страница 840: ...806 Ethernet Network Parameters Appendix I...
Страница 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Страница 844: ...810 Ethernet Specifications Appendix K...
Страница 851: ...Index 817 work words 118 write protection 447...
Страница 852: ...818 Index...
Страница 854: ...820 Revision History...
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