Elo TouchSystems B-Series Guide de l'utilisateur télécharger pdf (Page 86)

Section 4. USB Communications

Item Value

(Hex)

Input (Data, Variable, Absolute, Buffered Bytes) 82 02 01

Usage (Command message) 09 20

Report Count (24) 95 18

Feature (Data, Variable, Absolute, Buffered Bytes) B2 02 01

End Collection C0

CARD DATA

Card data is only sent to the host on the Interrupt In pipe using an Input Report. The device will

send only one Input Report per card swipe. If the host requests data from the device when no

data is available, the device will send a Nak to the host to indicate that it has nothing to send.

When a card is swiped, the Input Report will be sent even if the data is not decodable. The

following table shows how the input report is structured.

Offset Usage Name

0 Track 1 decode status

1 Track 2 decode status

2 Track 3 decode status

3 Track 1 data length

4 Track 2 data length

5 Track 3 data length

6 Card encode type

7 – 116 Track 1 data

117 – 226 Track 2 data

227 - 336 Track 3 data

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 164 165

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Elo TouchSystems B-Series Guide de l'utilisateur Page 86