Operating instructions
Technical specifications 
SCALANCE W788-xPRO / W74x-1PRO/RR 
A5E02280448-02, Release 11/2008 
49 
Table 6  Receiver sensitivity in IEEE 802.11a/h mode (5 GHz) 
Data rate [Mbps]  P
e
 [dBm] 
6  -90 
9  -89 
12  -88 
18  -86 
24  -83 
36  -80 
48  -75 
54  -74 
PNIO - performance data 
Even in the planning phase of a plant, it is important to know the reaction time of IO 
communication and the delay time for data communication in a PROFIBUS, 
PROFINET IO or Industrial Ethernet network. To provide you with reliable information 
on typical plants with different topologies, a large number of different configurations 
have been set up and measured. Based on these measured values, you can do the 
following: 
●  Design plants ideally in terms of their communication response and 
●  Compare different plant configurations with each other 
You will find the measured values by following the link below: 
http://www.siemens.de/automation/pd 










