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461
Error Classification and Confirmation
Section 9-1
CPU Unit Indicators and Error Meanings in RUN or MONITOR Mode
Seven-segment Display
Error codes are shown on the 7-segment display if an error occurs. The 7-
segment display has only two digits, so 4-digit error codes are displayed two
digits at a time. If there are 4-digit error details in addition to the error code,
they will be displayed after the error code two digits at a time.
• Display Example
Error code: 80F1 (memory error)
Error details: 0001 (user program)
The display switches at intervals of approximately 1 s.
• If two or more errors occur at the same time, the most serious error will be
displayed first. When that error is cleared, the next most serious error will
be displayed.
• The 7-segment display shows digits created by special instructions in the
user program or by analog adjustment operations. Error code displays,
however, are given priority whenever an error occurs.
Indicator
CPU
error
CPU
standby
Fatal
error
Non-
fatal
error
Peripheral port
communica-
tions error
Output
OFF Bit
turned ON
POWER
Lit
Lit
Lit
Lit
Lit
Lit
RUN
Not lit
Not lit
Not lit
Lit
Lit
Lit
ERR/ALM
Lit
Not lit
Lit
Flashing
---
---
INH
Not lit
---
---
---
---
Lit
BKUP
---
---
---
---
---
---
PRPHL
---
---
---
---
Not lit
---
Two-digit, 7-segment display
8.0.
f.1.
0.0.
0.1.
(Not lit)
Summary of Contents for CP1H-CPU - 05-2006
Page 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Page 3: ...iv...
Page 11: ...xii TABLE OF CONTENTS...
Page 15: ...xvi...
Page 19: ...xx...
Page 31: ...xxxii Conformance to EC Directives 6...
Page 71: ...40 Function Blocks Section 1 5...
Page 133: ...102 Computing the Cycle Time Section 2 7...
Page 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Page 411: ...380 Clock Section 6 8...
Page 519: ...488 Replacing User serviceable Parts Section 10 2...
Page 527: ...496 Standard Models Appendix A...
Page 535: ...504 Dimensions Diagrams Appendix B...
Page 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Page 659: ...628 PLC Setup Appendix G...
Page 665: ...634 Index work words 159 write protection 370...
Page 667: ...636 Revision History...