Problems to read some tags ICODE SLIX

juandedios — Tue, 30 Oct 2018 10:38:48 GMT

I'm developing a application RFID and I'm using tags with icode slix in iso15693 .The problem is that when my application send a slot to some tags, tag response with wrong UID. The first byte is valid but the second one is repeated several times.
For example:
I have a tag with UID E00401509A1988C2. Tag response: C219191919191919 (MSB).

I have a tag with UID E00401509A198D13. Tag response: 1319191919191919 (MSB).

Any suggestions? Thank you in advance. Best regards

Re: Problems to read some tags ICODE SLIX

Jonathan_Iglesias — Tue, 27 Nov 2018 14:27:46 GMT

Dear Peñas Jimenez,

In anti-collision procedure, the reader can set mask and filter out the tags upon their UID. The mask length indicates the number of significant bits of the mask value. It can have any value between 0 and 60 when 16 slots are used and any value between 0 and 64 when 1 slot is used. LSB shall be transmitted first. VICC always responds with it’s full UID to an Inventory command.

It looks like your application prints out just masked values (LSBs): C2h and 13h. Please use 16 slots in anti-collision and check how application behaves then. We would need to take a deep look into application if we would like to make recommendations. Otherwise, if NXP product, ICODE must respond with it’s UID always.

Jonathan

NFCのトピックProblems to read some tags ICODE SLIX

Problems to read some tags ICODE SLIX

Re: Problems to read some tags ICODE SLIX