Hi

I am facing the redundant fault in CPU 414H system, for both the CPUs the REDF led turns ON and Standby CPU goes to Stop mode

The system is working for 6 hours, then the above problem happens. what may the issue. Hardwares were ok, i increaed the synchronous timers etc.....


Diagnostic buffer of module CPU 414-4 H

Order No./ Description Component Version
6ES7 414-4HJ00-0AB0 Hardware 1
- - - Firmware V 3.1.4

Rack: 1
Slot: 3
Event 1 of 120: Event ID 16# 5371
Distributed I/Os: end of the synchronization with a DP master
Slot of the DP master: 3 in rack 1
Number of distributed stations: 16
Event occurred in the standby CPU in rack 1
Incoming event
12:49:18.076 PM 08/17/2010

Event 2 of 120: Event ID 16# 530D
New startup information in STOP mode
Startup prevented by:
- STOP request exists
- Cold restart or warm restart necessary
Startup information:
- Time for time stamp at the last backed up power on
- Single processor operation
Current/last startup type:
- Automatic warm restart after backed up power on
Permissibility of certain startup types:
- Manual warm restart permitted
Last valid operation or setting of automatic startup type at power on:
- No startup type/following memory reset
Operating mode: STOP (internal)
Event occurred in the standby CPU in rack 1
Incoming event
12:49:15.764 PM 08/17/2010

Event 3 of 120: Event ID 16# 43DA
STOP due to synchronization error between H CPUs
Previous operating mode: RUN (redundant mode)
Requested operating mode: STOP (internal)
Event occurred in the standby CPU in rack 1
Incoming event
12:49:15.760 PM 08/17/2010

Event 4 of 120: Event ID 16# 3961
Module/Interface Module removed/cannot be addressed
Actual type: Empty slot
Distributed I/0s
Station number: 5, DP master system ID: 1
Input address: 8148
Further information: 00
Requested OB: Remove/insert OB (OB83)
Priority class: 25
External error, Incoming event
12:49:15.727 PM 08/17/2010

Event 5 of 120: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 475
FC number: 1
Module address: 15134
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
12:49:15.700 PM 08/17/2010

Event 6 of 120: Event ID 16# 2943
I/O access error, writing
P area, word access, Access address: 142
FC number: 1
Module address: 15116
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
12:49:15.700 PM 08/17/2010