Filtering Out Transponders Using The "Black List - Siemens SIMATIC RF600 Series Configuration Manual

12.4

Filtering out transponders using the "Black list"

Description
In this example, transponders already identified by the read point will be filtered out using the
"Black list". The aim is that already identified transponders are not displayed again.
In this example there are different procedures depending on the user type (S7/Rockwell or
XML user). As an XML user, the description of the commands is self-explanatory (see
Section "editBlackList (Page 172)"). The following examples are intended for S7 users and
help them to understand how the black list works and to configure it.
Below two different examples (A and V) are described in which a distinction is made
between the way in which transponders are added to the "Black list".
● Example A:
All transponders currently in the antenna field of the read point and that have already
been identified are added to the "Black list". This can only take place while inventories are
being taken. In other words when previously an "INVENTORY" command with
"ATTRIBUTE=0x86" was sent.
● Example B:
Individual transponders are added selectively to the "Black list".
In the way it works, the "Black list" is similar to the menu item "Settings - Filters" of the WBM.
However the filter of the WBM can only be created and removed manually. The "Black list"
on the other hand can be programmed with the aid of S7 controllers or XML. This means that
the automated "Black list" can filter out transponders temporarily.
Algorithms used
● Black list
Requirement
The read points are mounted, equipped and aligned and during reading there are
transponders in the antenna field.
Parameter assignment - S7 / Rockwell user
Follow the steps below to activate the "Black list" algorithm:
1. In the menu item "Settings - Read points" in the "Algorithms" area activate the "Black list"
algorithm.
2. In the "Size" input box, specify the maximum number of transponders that can be
included in the "Black list".
SIMATIC RF600
Configuration Manual, 11/2018, C79000-G8976-C386-07
12.4 Filtering out transponders using the "Black list"
Application examples
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