Section 5 Maintenance
PROFIBUS DP-V1 – CI854
3BSE 027 941 R301
135
PROFIBUS DP-V1 – CI854
Table 27. PROFIBUS DP-V1 CI854 – Fault-Finding
Indication
Possible Cause and Corrective Action
Neither R(un) nor F(ault)
LED’s are ON
The CI854 board is in the process of being
restarted or configured. Allow time for this to
finalize.
If the condition persists, and no other unit LED on
the CEX-bus is lit:
•
Check the CEX-bus fuse inside the PM8xx
processor unit.
•
Initiate a reset signal (INIT) from the PM8xx
processor unit.
•
Replace the CI854 unit.
F(ault) LED is ON
The CI854 board is in the process of being
restarted, or a fatal error occurred. Allow time for
this to finalize. If the status remains replace the
CI854 unit.
RxA LED is OFF
No communication on Line A.
•
Check that slaves are connected to this line
and configured.
•
Check all cables and connectors for damage
and loose or poor connections.
RxB LED is OFF
No communication on Line B.
•
Check that slaves are connected to this line
and configured.
•
Check all cables and connectors for damage
and loose or poor connections.
Summary of Contents for AC 800M
Page 1: ...ControlIT AC 800M Version 2 1 Controller Hardware Hardware and Operation...
Page 2: ......
Page 3: ...Controller Hardware Hardware and Operation ControlIT AC 800M Version 2 1...
Page 10: ...7DEOH RI RQWHQWV 10 3BSE 027 941 R301...
Page 20: ...Related Documentation About This Book 20 3BSE 027 941 R301...
Page 26: ...Operating Environment Safety Summary 26 3BSE 027 941 R301...
Page 42: ...Product Release History Section 1 Introduction 42 3BSE 027 941 R301...
Page 108: ...Powering from an External 24 V DC Source Section 3 Configuration 108 3BSE 027 941 R301...
Page 118: ...Verification of Redundant CPU Section 4 Operation 118 3BSE 027 941 R301...
Page 212: ...Low Voltage Directive LVD Appendix D Directive Considerations 212 3BSE 027 941 R301...
Page 214: ...Hazardous Location Approval Appendix E Standards 214 3BSE 027 941 R301...
Page 228: ...QGH 228 3BSE 027 941 R301...
Page 229: ......