Configuring with Web Based Management   
6.5 "System" menu 
  SCALANCE W780/W740 to IEEE 802.11n Web Based Management 
212  Configuration Manual, 08/2018, C79000-G8976-C267-13 
Table 2 has the following columns: 
● 
 
The column contains the following values: 
– 
The device was turned on or restarted by the user. 
– 
 This event occurs only when the port status is monitored and has changed, see 
"System > Fault Monitoring > Link Change". 
– 
This event occurs when attempting access with a bad password. 
–  Power Change
This event occurs only when power supply lines 1 and 2 are monitored. It indicates 
that there was a change to line 1 or line 2. The event occurs when the PoE power 
supply has failed, see "System > Fault Monitoring > Power Supply". 
–  Spanning Tree Change
The STP or RSTP or MSTP topology has changed. 
–  Fault State Change
The fault status has changed. The fault status can relate to the activated port 
monitoring, the response of the signaling contact or the power supply monitoring. 
–  Overlap AP Detection (only in access point mode) 
This event is triggered when there is an entry in the Overlap AP list. 
–  WDS (Only in access point mode) 
The connection status of a WDS link has changed. 
–  DFS (Only in access point mode) 
This event occurs if a radar signal was received or the DFS scan was started or 
stopped. 
–  WLAN Authentication Log 
Forwarding of the entries from the WLAN authentication log to the system protocol 
server. 
–  WLAN De/Authentication(Only in client mode) 
With successful or failed WLAN authentication attempts. 
–  iPCF Cycle Time (Only in access point mode) 
Only available when the KEY-PLUG is inserted. 
This event occurs if too many clients are logged on for the set iPCF cycle time or if 
some clients were not reached in one cycle. 
–  iPCF Poll Size 
Only available when the KEY-PLUG is inserted.  
This event occurs if the PROFINET data size is too large for transfer. 
–  WLAN General (Only in access point mode) 
This event occurs if a the channel bandwidth has changed. 
–  Configuration Change 
This event occurs when the configuration of the device has changed.