每次下载完硬件，重启CPU，所有站点都会出现以下提示：
Event 4 of 10: Event ID 16# 38C4
Distributed I/Os: station return
Address of the affected DP slave: station number: 28
DP master system ID: 1
Log. base address of the DP slave: Input address: 2046
Log. base address of the DP master: 2047
OB number: 86
OB not found, or disabled, or cannot be started in the current operating mode
External error, Outgoing event
10:30:53:085 pm 05/14/06
是不是即使网络正常，每次CPU启动时检测网络都会出现上述提示？还是有其他含义？