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Speedway Reader IPJ-R1000 for Gen 2 UHF RFID

Figure 5-1 Operation

5.2. Tag Filters

The Inventory Filter screen (see Figure 5-2) is the user interface to the Select command, which the reader may apply

successively to sort a particular tag population based on user-defined criteria, which may include union, intersection, and

negation-based tag partitioning (union and intersection operations are performed by issuing successive Select commands).

Select commands apply to a single memory bank; the MemBank field specifies if the criteria applies to the TID, EPC, or user

memory, as follows:

MemBank 00 (0): Reserved

MemBank 01 (1): EPC

MemBank 10 (2): TID

MemBank 11 (3): User

Successive Selects may apply to different memory banks. The Bit Offset and Bit Length fields are used to target a specific

portion of the tag memory on which to perform the filtering, while the Pattern field contains the comparison bits of interest.

As tags are read, the pattern is evaluated against the Select criteria, which includes Equal and Not Equal options in the

Comparison field.

The Inventory Filter allows the use of two sets of criteria (defined by primary filter A and secondary filter B) that may be

used separately, jointly, or not at all (the pull-down options include No Filter, A ONLY, A AND B, A OR B). When applied to

an inventory round, only those tags that match the Select criteria will be displayed.

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American access system ADV-1000 Guía de usuario Pagina 17