2 Automation Solution
2.2
Description of the core functionality
Evaluating An Access Point Clients List
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The SCALANCE W788-2RR (access point) provides “MIB variables” into which the
system writes the current MAC addresses.
In this application these “MIB variables” are read out and evaluated using STEP 7
blocks.
This is how it can be determined with what access point the mobile panel is
connected.
The blocks used need an Ethernet CP for the evaluation, irrespective of whether
the used CPU has an Ethernet interface.
What can the application perform?
The program example included contains
a STEP 7 program to evaluate the “Clients list” of two
access points
a “standard configuration” for the mobile panel
MIB list of the SCALANCE W788-2RR
You can use the program as template for your applications.
In the further course of this documentation there is special emphasis on the STEP
7 program.
What must or can I do as a user?
The application program is especially tailored for the Mobile Panel 277F IWLAN
V2. However, you can adjust the program individually for the device used by you.
Especially the STEP 7 program is “device-independent”.
Through the structure of the blocks used and the variables used, the program can
be quickly expanded and adjusted to your application.
To read out the “MIB variables” a multitude of software offers (partly free of charge)
is available. You have to determine yourself what MIB browser you use for reading
out the “MIB variables”. In this application the
The individual terms such as, e.g. “MIB variables” are discussed in more detail in
chapter 3 “Basics”.