Reset during RFID write

[stephanmeyer]

The PICC (ICODE DNA) is being corrupted during a write such it is rendered permanently unusable. Our reagent supply line is such we sell our customers a reagent pack with a RFID PICC for authentication and qty/expiration tracking of their associated liquids contained therein. If the TAG (PICC) is corrupted, it renders the $300-$500 pack useless which warrants an angry call to Beckman Coulter service department, a situation we obviously want to avoid.

The software team thinks the TAG is being corrupted during RFID write to the ICODE DNA. This is because the K70 was reinitialized (over USB) by our UI and if a RFID write was in progress, the CRC doesn’t match after the K70 returns form restarting and the data on the TAG is permanently affected. Is this something your team has encountered before? Is there a common way to prevent this kind of thing from happening? Is it a known issue and has a well-established work around?

Equipment used:

K-70/SPI               HOST

Skyetek M2         PCD

ICODE DNA         PICC

[stephanmeyer]

"Was K70 reset by the UI during RFID write? Did the firmware inside K70 has any function to reset itself? Please kindly clarify.

Thanks for your patience!

Have a great day,
Kan"

That is correct, the K70 is communicating with the UI over USB 2.0.

I don't have knowledge of the FW to answer your second question sir.

Apparently, default behavior when the UI crashes or power is suddenly removed/applied is to reinitialize the USB port from the UI side. When this happens, if an RF Write is in progress, the CRC values don't match and the ICODE DNA tag becomes permanently corrupted and is thus rendered unusable.

Certainly, reset behavior has been considered for sudden power outages or loss of communications in regard to secure RF transmission before now. Is there a standard way to prevent this situation? Best practice, if you will?

[Kan_Li]

What about the address of the RF write? Would you please specify?

Have a great day,
Kan

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[Kan_Li]

Was K70 reset by the UI during RFID write? Did the firmware inside K70 has any function to reset itself? Please kindly clarify.

Thanks for your patience!

Have a great day,
Kan

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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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