我是一位工廠維修保養員,對西門子PLC可以說完全沒接觸,我現在遇到一個問題,在這請教解決方法
現場有一離心機機器是用西門子PLC控制,雖然離心機不是每天必用機器,不過一但要用就變的很重要
,目前遇到的問題是不論機器啟用或停用(控制盤是保持待機狀態),PLC會偶發性停止(可能5分後就停止
也可能2天停止,發生時間不定),異常時CPU 314C-2DP SF常亮,BF閃爍....ET200S燈號 SF閃爍3次(BF不亮)
--->BF閃爍8次(SF不亮)--> SF閃爍3次(BF不亮)--->BF閃爍8次(SF不亮)--> ....................,最近從網路了解一些
西門子一基本知識(但還是不太了解),終於會連線看異常出現如下異常訊息:

Event 2 of 100: Event ID 16# 39C4
Distributed I/Os: station Failure
Address of the affected DP slave: station number: 10
DP master system ID: 1
Log. base address of the DP slave: Input address: 1021
Log. base address of the DP master: 1023
Requested OB: Rack failure OB (OB86)
Priority class: 26
External error, Incoming event

從網路中有人說要加入OB82,OB86,OB122,我終於了解如何加入但不會編程(討論區說空的就可),但問題仍出現
雖然CPU沒停止但CPU及ET200S的燈號如上述異常一樣,異常信息不一樣,但線路我已經查三次,連異常的I/O模塊已全換了,剩
CPU及ET200S沒換(因為備品還沒買入廠),異常信息如下:

Diagnostic buffer of module CPU 314C-2 DP
Order No./ Des cription Component Version
6ES7 314-6CF02-0AB0 Hardware 1
- - - Firmware V 2.0.10
Rack: 0
Slot: 2
Event 1 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 260
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.682 AM 11/07/1997

Event 2 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 266
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.681 AM 11/07/1997

Event 3 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 264
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.680 AM 11/07/1997

Event 4 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 262
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.675 AM 11/07/1997

Event 5 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 258
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.675 AM 11/07/1997

Event 6 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 256
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.674 AM 11/07/1997

Event 7 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 260
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.674 AM 11/07/1997

Event 8 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 266
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.673 AM 11/07/1997

Event 9 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 264
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.672 AM 11/07/1997

Event 10 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 262
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
05:03:14.668 AM 11/07/1997

請問要如何解決這問題