Stid ultrys - Page 27

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© STid – MU_ULTRYS_V3.0_EN
SPECTRE READ ONLY
EPC Filter
Examples:
Code EPC Tag 1: AAAAABCD0000000000000001
Code EPC Tag 2: AA02ABCD0000000000000002
Code EPC Tag 3: AA02ABCD0000000000000003
Code EPC Tag 4: AA02FFFF0000000000000003
1- EPC mask = AA AA and Offset = 0
Tag 1 : AAAAABCD0000000000000001
Tag 2 : AA02ABCD0000000000000002
Tag 3 : AA02ABCD0000000000000003
Tag 4 : AA02FFFF0000000000000003
Only tag 1 is transmitted.
2- EPC mask = AA AA AA and Offset = 0
Tag 1: AAAAABCD0000000000000001
Tag 2: AA02ABCD0000000000000002
Tag 3: AA02ABCD0000000000000003
Tag 4: AA02FFFF0000000000000003
No tag is transmitted.
3- EPC mask = 01 and Offset = 11
Tag 1: AA AA AB CD 00 00 00 00 00 00 00 01
Tag 2: AA 02 AB CD 00 00 00 00 00 00 00 02
Tag 3: AA 02 AB CD 00 00 00 00 00 00 00 03
Tag 4: AA 02 FF FF 00 00 00 00 00 00 00 03
Offset is represented in blue; the filter is done on byte 12.
Only tag 1 is transmitted.
4- EPC mask = AB and Offset = 2
Tag 1: AA AA AB CD 00 00 00 00 00 00 00 01
Tag 2: AA 02 AB CD 00 00 00 00 00 00 00 02
Tag 3: AA 02 AB CD 00 00 00 00 00 00 00 03
Tag 4: AA 02 FF FF 00 00 00 00 00 00 00 03
Tags 1, 2 and 3 are transmitted.
5- EPC mask = AB, Offset = 2 and Reversal
Tag 1: AA AA AB CD 00 00 00 00 00 00 00 01
Tag 2: AA 02 AB CD 00 00 00 00 00 00 00 02
Tag 3: AA 02 AB CD 00 00 00 00 00 00 00 03
Tag 4: AA 02 FF FF 00 00 00 00 00 00 00 03
Tags 1, 2 and 3 are not transmitted. Only tag 4 is transmitted.