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476
Troubleshooting
Section 9-2
9-2-6
Other Errors
Communications Errors
■
CPU Unit Indicators
POWER
Lit
RUN
Lit
ERR/ALM
---
INH
---
BKUP
Not lit
PRPHL
---
Seven-segment
display
Probable cause and possible remedy
None
An error has occurred in the communications between the periph-
eral port and connected device. Confirm that the peripheral port
settings in the PLC Setup are correct.
An error has occurred in the communications between the RS-
232C port and connected device. Confirm that the RS-232C port
settings in the PLC Setup are correct. Check the cable wiring. If a
host computer is connected, check the serial port settings and
program in the host computer.
POWER
RUN
INH
PRPHL
BKUP
ERR/ALM
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...