ACS ACR1281U-C8, Programming Manual

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ACR1281U-C8 – Application Programming Interface
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5.6. ACR120_WriteMasterKey
Writes master keys.
High Level API :
DLLAPI INT16 AC_DECL
ACR120_WriteMasterKey(INT16 hReader,
UINT8 KeyNo,
UINT8 pKey[6]);
Parameters Description
hReader Handle to the reader returned by AC_Open()
KeyNo Master key number
pKey
Key to write. It is AC_MIFARE_KEY_LEN(6) bytes
long.
Return Value INT16 Result code. 0 means success.
Table 25 : ACR120_WriteMasterKey Command Description
Low Level Frame Structure:
Command: From PC to Reader (12 bytes)
Command Code
(1 byte)
Command Data length
(1 bytes)
Instruction Code
(1 byte)
Data length
(1 byte)
Data
(1 byte) (6 bytes)
E0h 09h 0Dh 07h KeyNo pKey
Response: From Reader to PC (11 bytes) <<Success >>
Response Code Response Status Response Data Length Response Data
(1 byte) (2 bytes) (2 bytes) (6 bytes)
E1h INT16 (>=0) 0006h KeyStored
Note:
The Response Data (KeyStored) is used for comparison only.
Or
Response: From Reader to PC (5 bytes) << Fail>>
Response Code Response Status Response Data Length
(1 byte) (2 bytes) (2 byes)
E1h INT16 (<0) 0000h