User's Manual

Page 88 of 105 User Manual | SRU-8X1X RFID Reader 18000-63
Doc No. 47000001740
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Version 01
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2018-12-11
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released
Confidential
14.8.5 Applying a Select Filter (Example)
You have the following results of the basic reading but you would like only the tags with the FC28 in the
memory address to take part in the inventory:
Figure 50 Basic reading: select filter required
To do so, it is necessary to create a select filter. The advantage of this process is that the filtering takes
place already at the air interface level.
To create the select filter as shown in the figure below:
1. Select the filter you would like to save the filtering settings to under Filter (ᬅ).
2. Select the target (ᬆ). Make sure the target matches the session set in ᬗ Figure 46.
3. Select an action (ᬇ). In the example, the action is set to 100; see also EPCglobal Gen 2
Specification.
4. Select the EPC memory bank (ᬈ).
5. Activate the select filter (ᬉ).
6. Refer to the EPCglobal Gen 2 Specification to check from which bit pointer the filter will search for the
value according to which you would like to filter the tags (FC28 in the example); see pp. 44–46 in the
EPCglobal Gen 2 Specification V 2.0.1. In the example, FC28 is the third word in the EPC memory
bank (bit pointer 0x00 is the CRC, bit pointer 0x10 is the PC, bit pointer 0x20 is the first EPC word).
Therefore, FC28 corresponds to the bit pointer 0x40.
7. Enter 40 at Bit pointer (ᬊ).
8. Enter the mask length at ᬋ. In the example, FC28 is one word, therefore, the value is 16.
9. Enter the value (FC28) at ᬌ.
10. Click Set (ᬍ).
11. Go to Expert settings 1.
12. In Selection Parameters, set the value at target to B; see also EPCglobal Gen 2 Specification.
13. Start the reading in the Basic reading tab:

ۆ The reader only reads the tags with the filtered value (marked green). The tag without the filtered value is
not read (marked red).