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哪位高手帮我看看S7-300 PLC不定期（3分钟到40分钟不等）SF灯亮故障，设备无法工作，即使是待机状态，拜谢！硬件诊断信息如下：
Diagnostic buffer of module CPU 315-2 DP
Order No./ Description Component Version
6ES7 315-2AG10-0AB0 Hardware 7
- - - Firmware V 2.6.11
Boot Loader Firmware expansion A 0.21.0
Rack: 0
Slot: 2
Serial number: S C-XDVR71642009
Event 1 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:
- Automatic warm restart after backed up power on
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:
- Automatic warm restart after backed up power on
Previous operating mode: STARTUP (warm restart)
Requested operating mode: RUN
Incoming event
05:32:21.429 AM 07/30/1997
Event 2 of 10: Event ID 16# 1382
Request for automatic warm restart
STOP due to: Power failure
Startup information:
- Startup without modified system configuration
- No difference between setpoint and actual configuration
- 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
- Automatic warm restart permitted
Last valid operation or setting of the automatic startup type at power on:
- Automatic warm restart after backed up power on
Requested OB: Startup OB (OB100)
Priority class: 27
Incoming event
05:32:21.427 AM 07/30/1997
Event 3 of 10: Event ID 16# 4301
Mode transition from STOP to STARTUP
STOP due to: Power failure
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
- Automatic warm restart permitted
Last valid operation or setting of the automatic startup type at power on:
- Automatic warm restart after backed up power on
Previous operating mode: STOP (internal)
Requested operating mode: STARTUP (warm restart)
Incoming event
05:32:20.621 AM 07/30/1997
Event 4 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 6
DP master system ID: 1
Log. base address of the DP slave: Input address: 2041
Log. base address of the DP master: 2047
Requested OB: Rack failure OB (OB86)
OB not found, or disabled, or cannot be started in the current operating mode
External error, Outgoing event
05:32:20.323 AM 07/30/1997
Event 5 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 5
DP master system ID: 1
Log. base address of the DP slave: Input address: 2042
Log. base address of the DP master: 2047
Requested OB: Rack failure OB (OB86)
OB not found, or disabled, or cannot be started in the current operating mode
External error, Outgoing event
05:32:20.227 AM 07/30/1997
Event 6 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 4
DP master system ID: 1
Log. base address of the DP slave: Input address: 2044
Log. base address of the DP master: 2047
Requested OB: Rack failure OB (OB86)
OB not found, or disabled, or cannot be started in the current operating mode
External error, Outgoing event
05:32:20.133 AM 07/30/1997
Event 7 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 3
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)
OB not found, or disabled, or cannot be started in the current operating mode
External error, Outgoing event
05:32:20.050 AM 07/30/1997
Event 8 of 10: Event ID 16# 3842
Module OK
Module type: Distributed I/0s
Input address: 2041
User information available
Diagnostic interrupt from substitute
Requested OB: Diagnostic interrupt OB (OB82)
OB not found, or disabled, or cannot be started in the in the current operating mode
External error, Outgoing event
05:32:19.956 AM 07/30/1997
Event 9 of 10: Event ID 16# 3842
Module OK
Module type: Distributed I/0s
Input address: 2042
User information available
Diagnostic interrupt from substitute
Requested OB: Diagnostic interrupt OB (OB82)
OB not found, or disabled, or cannot be started in the in the current operating mode
External error, Outgoing event
05:32:19.954 AM 07/30/1997
Event 10 of 10: Event ID 16# 5371
Distributed I/Os: end of the synchronization with a DP master
Slot of the DP master: 2
Number of distributed stations: 4
Incoming event
05:32:19.940 AM 07/30/1997
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