5 Configuration Process
5.2
STEP 7 configuration
Evaluating An Access Point Clients List
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FC15, EvaluationAccessPoint_01
The evaluation of the “Clients list” for the
first
access point is through the FC15.
The evaluation comprises the evaluation of two mobile panels and can be
expanded by other mobile panels.
The data blocks DB15 and DB25 have been especially reserved for the first access
point.
Table 5-11
No.
Updates
Screens
1.
FC15, Evaluation_Scalance_01:
Network 1:
In network 1 the FB3, GetRequest is called.
The configuration is through DB15. The
evaluated data is output through DB25.
The individual parameters of the FB3 are
described in chapter 4.1 or 4.3.1.
2.
FC15, Evaluation_Scalance_01:
Network 2:
In network 2 an edge evaluation of parameter
“
NDR
” (DB25.DBX10.2) of FB3 is performed.
The NDR parameter has “1” signal, if the FB3
has read in a new value of a “MIB variable”
and no error occurred.
3.
FC15, Evaluation_Scalance_01:
Network 3:
After each successful reading in of a “MIB
variable” the value of the “
ObjectID
”
(DB15.DBW20) parameter of the FB3 is
increased by “1”.
(=> This has the effect that the FB3 is
specified a new
“MIB variable” for reading in).
If the value is “
> 10
” the value is reset to “1”
(The “Clients list” of 10 nodes is subsequently
read out).
If a “MAC address” was detected the read out
value is subsequently overwritten with “zero”
again.
Background:
the “ValueInterval” parameter is not
overwritten by the FB3 until it has found a new
value in the “Clients list”. This could have the
effect that an “old” value remains, although
there is no “node” in the “Clients list”.
