Advanced Card ACR122S, User Manual

Page: 22 / 57

ACR122S – Communication Protocol
info@acs.com.hk
Version 2.01
www.acs.com.hk
Page 22 of 57
In which,
Direct Transmit APDU = “FF 00 00 00”
Length of the Tag Command = “08”
Tag Command (InDataExchange) = “D4 40 01”
Tag Command (Get Challenge) = “00 84 00 00 08”
To send an APDU to the slot 0 (default), sequence number = 5.
HOST -> 02 6F 0D 00 00 00 00 05 00 00 00
FF 00 00 00 08 D4 40 01 00 84 00 00 08
[Checksum] 03
RDR -> 02 00 00 03
RDR -> 02 81 0F 00 00 00 00 05 00 00 00
D5 41 00 01 02 03 04 05 06 07 08 90 00 90 00
[Checksum] 03
The APDU Response is “D5 41 00 0B 01 02 03 04 05 06 07 08 90 00”
In which,
Response returned by the contactless chip = “D5 41 00”
Response from the Type B Tag = “01 02 03 04 05 06 07 08 90 00”
Status Code returned by the reader = “90 00”
6.3. Get Firmware Version
This command is used to derive the firmware version of the reader.
Get Firmware Version Command Format (5 Bytes)
Command Class INS P1 P2 Le
Get Response FFh 00h 48h 00h 00h
Where:
Le Number of bytes to retrieve (1 Byte).
Maximum 255 bytes.
Get Firmware Version Response Format (10 Bytes)
Response Data Out
Result Firmware Version
Example:
Response = 41 43 52 31 32 32 53 31 30 30 (Hex) = ACR122S100 (ASCII)