我在接SM335模拟量输入接线时，不慎将地线插入插排220V口中，配电箱跳闸。当时PLC不通电。SM335放在4号位的，后面还有两个FM350模块。
后来再运行时出现如下报错信息：
Event 1 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 7
DP master system ID: 1
Log. base address of the DP slave: Input address: 2046
Log. base address of the DP master: 2047
Requested OB: Rack failure OB (OB86)
Priority class: 26
External error, Outgoing event
Event 2 of 10: Event ID 16# 3842
Module OK
Module type: Distributed I/0s
Input address: 2046
User information available
Diagnostic interrupt from substitute
Requested OB: Diagnostic interrupt OB (OB82)
Priority class: 26
External error, Outgoing event
Event 3 of 10: Event ID 16# 39C4
Distributed I/Os: station Failure
Address of the affected DP slave: station number: 7
DP master system ID: 1
Log. base address of the DP slave: Input address: 2046
Log. base address of the DP master: 2047
Requested OB: Rack failure OB (OB86)
Priority class: 26
External error, Incoming event
Event 4 of 10: Event ID 16# 4302
Mode transition from STARTUP to RUN
Startup information:
- Time for time stamp at the last backed up power on
- Single processor operation
Current/last startup type:
- Warm restart triggered by switch setting; last power on backed up
Permissibility of certain startup types:
- Manual warm restart permitted
- Automatic warm restart permitted
Last valid operation or setting of automatic startup type at power on:
- Warm restart triggered by switch setting; last power on backed up
Previous operating mode: STARTUP (warm restart)
Requested operating mode: RUN
Incoming event
RUN之后电机短暂运行，后报错停止，SF灯亮，之后SF灯灭，无报错，单电机还是不运行。
求大神指导啊！
问题补充：
补充诊断信息：
Event 5 of 10: Event ID 16# 1381
Request for manual warm restart
STOP due to: STOP caused by stop switch being activated
Startup information:
...
Requested OB: Startup OB (OB100)
Priority class: 27
Incoming event
Event 6 of 10: Event ID 16# 4301
Mode transition from STOP to STARTUP
STOP due to: STOP caused by stop switch being activated
Startup information:
...
Previous operating mode: STOP (internal)
Requested operating mode: STARTUP (warm restart)
Incoming event
我一直用的是OB100暖启动，不知道为什么这个也报错...
最佳答案
External error, Outgoing event
Event 3 of 10: Event ID 16# 39C4
Distributed I/Os: station Failure
Address of the affected DP slave: station number: 7
解读上述诊断信息，分布 I/O站故障，需要检查7号从站相关的硬件。
提问者对于答案的评价：
感谢阿鸣大神提供的建议，我将PLC模块分开测试的，数字量、模拟量、计数模块单独测试都是好的，最后在检查DP从站时发现PROFIBUS屏蔽线的屏蔽层部分地方烧焦了，造成接触不良，重新剥线，换了一个接口后，问题解决！
专家置评
已阅，最佳答案正确。
原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc239635.html
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