3号从站限位开关动作时，cpu出现sf、bf灯报错，cpu不停机。cpu故障信息如下：
Diagnostic buffer of module CPU 315-2 DP

Order No./ Des cription 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


Event 1 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)
Priority class: 26
External error, Outgoing event
01:00:19.975 AM 02/04/1996


Event 2 of 10: Event ID 16# 39C4
Distributed I/Os: station Failure
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)
Priority class: 26
External error, Incoming event
01:00:19.838 AM 02/04/1996


Event 3 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
12:59:17.991 AM 02/04/1996


Event 4 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
12:59:17.990 AM 02/04/1996


Event 5 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
12:59:17.169 AM 02/04/1996


Event 6 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 8
DP master system ID: 1
Log. base address of the DP slave: Input address: 2038
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
12:59:16.842 AM 02/04/1996


Event 7 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: 2040
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
12:59:16.746 AM 02/04/1996


Event 8 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: 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
12:59:16.650 AM 02/04/1996


Event 9 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: 2036
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
12:59:16.554 AM 02/04/1996


Event 10 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
12:59:16.468 AM 02/04/1996
请大家帮忙看看，谢谢