有一分布式IO站(ET200X)挂3个模块,最近总是报警.请高手看看这些信息是什么意思?会是哪里出问题了?
其DP地址是17.

Diagnostic buffer of module CPU 414-2 DP

Order No./ Des cription Component Version
6ES7 414-2XG03-0AB0 Hardware 5
- - - Firmware V 3.0.0

Rack: 0
Slot: 3
Event 1 of 120: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 17
DP master system ID: 1
Log. base address of the DP slave: Input address: 8180
Log. base address of the DP master: 8191
Requested OB: Rack failure OB (OB86)
Priority class: 25
External error, Outgoing event
05:36:29.972 PM 03/18/2012
(Coding: 16# 38C4 1956 C054 1FFF 1FF4 0111)
最近一次的信息.
下面是上一次的信息:
Event 11 of 120: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 17
DP master system ID: 1
Log. base address of the DP slave: Input address: 8180
Log. base address of the DP master: 8191
Requested OB: Rack failure OB (OB86)
OB not found, or disabled, or cannot be started in the current operating mode
External error, Outgoing event
06:45:05.242 PM 02/27/2012
(Coding: 16# 38C4 FE56 C054 1FFF 1FF4 0111)