Siemens SIMATIC NET SCALANCE W780 Series Configuration Manual page 410

Configuring with Web Based Management
6.10 "iFeatures" menu
In access point mode, the table has the following additional columns:
● Protocol Support
Specify which protocol is handled with priority by the WLAN interface.
– PROFINET
– EtherNet/IP
– Disabled
● iPCF-HT Cycle Time [ms]
Specify the cycle time.
The following points need to be taken into account when setting the cycle time. Otherwise
it may not be possible to establish stable communication.
– The range of values is 16 - 512. The set value should correspond the cycle time of
– There is only one access point in the system; in other words, the clients move only in
– There are several access points in the system that communicate over different
In addition to the guide values shown above, remember that the shortest cycle time to be
set is calculated according to the formula "4 ms * max. number of nodes".
● Scanning Mode
The selected setting affects the scanning of the logged-on clients.
The following settings are available:
– All Channels
– Next Channel
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if you set PROFINET, there must be no PROFINET controller downstream from the
client.
If you set Ethernet/IP, there must be no scanner downstream from the client.
The function is disabled.
PROFINET or EtherNet/IP.
one wireless cell. In this case, update times >= 16 ms are supported.
channels. The clients roam between the access points. In this case, select update
times >= 32 ms.
The client scans all permitted channels and selects the access point with the best
signal strength and connects to it.
The client scans the next channel from its permitted channel list. If an access point is
there, it connects to it. If it does not find an access point on this channel, it scans the
next channel.
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 08/2018, C79000-G8976-C267-13