Siemens CP 1515 Operations Instructions Page 215

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Configuration Using Web Based Management and the Command Line Interface
6.7.2 iPCF Menu Command
Note
C79000-G8976-C184-07
215
nu command is avai ALANCE W788-xR ANCE
47-1RR and the IW
The iPCF me lable for a SC R or SCAL
W7 LAN/PB Link.
Notice
With the SCALANCE W ed for one of the two
rfaces.
788-2RR, iPCF may only be enabl
WLAN inte
Restriction
With wireless LAN com aximum data throughput
cannot be achieved in a er number of nodes due to the
g collisions. A fu r t
d with 802.11 s al e
WLAN products, these f several hundred
New Possibilities with iPCF
In an industrial environment, there are applications that re c
response when there are large numbers of nodes and a h
cell. A deterministic behavior is also required when changi ndover
times of under 100 milliseconds.
To meet these requirements, the iPCF expansion (industrial Point Coordination
Function) was developed. iPCF is available with the following products:
SCALANCE W788-1RR and SCALANCE W788-2RR
SCALANCE W747-1RR
IWLAN/PB Link
iPCF ensures that the entire data traffic of a cell is ordered, controlled by the
access point. By avoiding collisions, the throughput can be optimized even with
large numbers of nodes. iPCF also allows fast cell changes.
Note
For PNIO communication, we always recommend that you enable the iPCF mode.
The signal strength must not fall below 60% or -65 dBm for reliable operation.
s of the 802.11 Standard
plying with IEEE 802.11, the m
cell when there is a high
resultin
achieve
rther restriction are the handove
tandard mechanisms. With norm
are of the order o
imes that can be
commercially availabl
milliseconds.
quire a deterministi
igh data throughput in a
ng cells with ha
Operating Instructions SCALANCE W78x
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