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472
Troubleshooting
Section 9-2
9-2-4
CPU Errors
■
CPU Unit Indicators
A CPU error or fatal error may have occurred if the ERR/ALM indicator lights
during operation (RUN mode or MONITOR mode), the RUN indicator turns
OFF, and operation stops. A CPU error may have occurred if nothing is shown
on the 7-segment display or the same message remains on the display.
CPU Errors
■
Reference Information
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.
9-2-5
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 code on the
7-segment display and from the Error Tab Page of the CX-Programmer’s PLC
Error Window. Take corrective actions after checking 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.
POWER
Lit
RUN
Not lit
ERR/ALM
Lit
INH
---
BKUP
---
PRPHL
---
POWER
RUN
INH
PRPHL
BKUP
ERR/ALM
Seven-segment
display
Probable cause and possible remedy
The display is not
lit or it is frozen.
A WDT (watchdog) error occurred in the CPU Unit. (This does
not occur in normal use.) Cycle the power supply. The Unit may
be faulty. Consult your OMRON representative.
Error flag
None
Error code (A400)
None
Error information
None
POWER
Lit
RUN
Lit
ERR/ALM
Flashing
INH
---
BKUP
---
PRPHL
---
POWER
RUN
INH
PRPHL
BKUP
ERR/ALM
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...