附上诊断记录 大家帮忙分析！谢谢，最近几天出现了2次，重启从机架CPU就又好了。
Diagnostic buffer of module CPU 414-4 H
Order No./ Description Component Version
6ES7 414-4HJ00-0AB0 Hardware 1
- - - Firmware V 3.1.3
Rack: 1
Slot: 3
Event 8 of 120: Event ID 16# 7855
SYNC submodule error eliminated
occurred in: Master CPU in rack 0, no relevance for user:bb
Submodule affected: Upper SYNC submodule (IFM1F)
No text available for Z3, byte 0: 00
Requested OB: CPU redundancy error OB (OB72)
Priority class: 28
External error, Outgoing event
01:53:39.285 PM 02/12/2014
Event 9 of 120: Event ID 16# 7955
SYNC submodule error
occurred in: Master CPU in rack 0, no relevance for user:bb
Submodule affected: Upper SYNC submodule (IFM1F)
No text available for Z3, byte 0: 00
Requested OB: CPU redundancy error OB (OB72)
Priority class: 28
External error, Incoming event
01:53:38.763 PM 02/12/2014
Event 10 of 120: Event ID 16# 7955
SYNC submodule error
occurred in: Master CPU in rack 0, no relevance for user:01
Submodule affected: Upper SYNC submodule (IFM1F)
No text available for Z3, byte 0: 00
Requested OB: CPU redundancy error OB (OB72)
Priority class: 28
External error, Incoming event
01:53:38.759 PM 02/12/2014
Event 11 of 120: Event ID 16# 7855
SYNC submodule error eliminated
occurred in: Master CPU in rack 0, no relevance for user:bb
Submodule affected: Upper SYNC submodule (IFM1F)
No text available for Z3, byte 0: 00
Requested OB: CPU redundancy error OB (OB72)
Priority class: 28
External error, Outgoing event
01:43:42.486 PM 02/12/2014
Event 12 of 120: Event ID 16# 43E3
Master CPU: Change from redundant mode to solo mode
Previous operating mode: RUN (redundant mode)
Requested operating mode: RUN
Event occurred in the master CPU in rack 0
Incoming event
01:43:41.823 PM 02/12/2014
Event 13 of 120: Event ID 16# 7955
SYNC submodule error
occurred in: Master CPU in rack 0, no relevance for user:bb
Submodule affected: Upper SYNC submodule (IFM1F)
No text available for Z3, byte 0: 00
Requested OB: CPU redundancy error OB (OB72)
Priority class: 28
External error, Incoming event
01:43:41.823 PM 02/12/2014
Event 14 of 120: Event ID 16# 7955
SYNC submodule error
occurred in: Master CPU in rack 0, no relevance for user:01
Submodule affected: Upper SYNC submodule (IFM1F)
No text available for Z3, byte 0: 0E
Requested OB: CPU redundancy error OB (OB72)
Priority class: 28
External error, Incoming event
01:43:41.816 PM 02/12/2014
问题补充：
请帮忙看是不是同步模块故障？还是同步光纤故障？是否可以定位到4哪个同步子模块。谢谢
最佳答案
参见：H-CPU的发光二极管出错显示
http://support.automation.siemens.com/CN/llisapi.dll?func=cslib.csinfo&lang=zh&objid=11312956&caller=view
在你的程序中添加OB72，可以在此块中查看信息。
组织块使用说明
http://wenku.baidu.com/link?url=BY4k-WjSF6yNaSCQDjczdOhGywg7dtwX0RCRqB6aL15_9L26cceJTIt0o_nG2jcUI-bE9J9oVKDBgG0xTCkvDt8-g3yvzzQxw2YEqAyZXhO
提问者对于答案的评价：
不错，谢谢！如果再详细点就好了，呵呵
原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc235093.html
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