FM350有问题吗，

公司运行8年设备，传动偶尔一直都有问题（有时几天无故障，有时间隔2小时，不固定）！！
出故障时，有时能看到CPU诊断信息如下，但有时出现如下诊断信息时，传动正常！
现场FM模块正常，无故障指示灯！！
Diagnostic buffer of module CPU 416-2 DP

Order No./ Description         Component                      Version
6ES7 416-2XK02-0AB0            Hardware                       7
- - -                          Firmware                       V 3.1.3

Rack: 0
Slot: 3

Event 1 of 120:  Event ID 16# 3842
Module OK
Module type: FM
Input address:    44
Channel information available
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 25
External error, Outgoing event
09:25:45.922 PM  04/14/2013

Event 2 of 120:  Event ID 16# 3942
Module problem or maintenance necessary
Module type: FM
Input address:    44
Hardware interrupt lost
Channel information available
Module/submodule fault
Internal module error
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 25
External error, Incoming event
09:25:45.842 PM  04/14/2013

Event 3 of 120:  Event ID 16# 3842
Module OK
Module type: FM
Input address:    84
Channel information available
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 25
External error, Outgoing event
05:38:05.080 PM  04/14/2013

Event 4 of 120:  Event ID 16# 3942
Module problem or maintenance necessary
Module type: FM
Input address:    84
Hardware interrupt lost
Channel information available
Module/submodule fault
Internal module error
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 25
External error, Incoming event
05:38:05.055 PM  04/14/2013

Event 5 of 120:  Event ID 16# 3842
Module OK
Module type: FM
Input address:    44
Channel information available
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 25
External error, Outgoing event
04:48:09.902 PM  04/14/2013

Event 6 of 120:  Event ID 16# 3942
Module problem or maintenance necessary
Module type: FM
Input address:    44
Hardware interrupt lost
Channel information available
Module/submodule fault
Internal module error
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 25
External error, Incoming event
04:48:09.835 PM  04/14/2013

最佳答案

应该和DP头松动、干扰或内部电源等有联系，可参考这里的讨论和你出现的问题一样。
《S7 300 SF故障诊断》
http://www.ad.siemens.com.cn/club/bbs/post.aspx?b_id=4&a_id=960758

提问者对于答案的评价：
月底更换模块，看看！谢谢支持！

原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc240856.html

FM350有问题吗，

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