CPU 315-2 DP的PLC带了几个ET200站，现在有一个分站18报故障。Distributed I/Os: station return。但是在线监视硬件组态时，这个分站显示通讯正常，并未打叉，而是CPU显示打叉状态。CPU并未停机。诊断信息为：
Event 1 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 18
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)
Priority class: 26
External error, Outgoing event
01:13:42.716 AM 01/28/1994
Event 2 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 618
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.481 AM 01/28/1994
Event 3 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 616
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.481 AM 01/28/1994
Event 4 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 614
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.481 AM 01/28/1994
Event 5 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 612
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.481 AM 01/28/1994
Event 6 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 610
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.481 AM 01/28/1994
Event 7 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 608
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.481 AM 01/28/1994
Event 8 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 618
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.466 AM 01/28/1994
Event 9 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 616
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.466 AM 01/28/1994
Event 10 of 10: Event ID 16# 2942
I/O access error, reading
P area, word access, Access address: 614
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
01:13:42.466 AM 01/28/1994
请各位帮忙给出解决的方法，万分感谢！
问题补充：
是不是通讯干扰造成的呢？造成数据传输出现丢失的情况，但不影响通讯？？？？？
图片说明：
最佳答案
一般从新下载一下就可以了。
提问者对于答案的评价：
管用！
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