User's Manual

37 | P a g e www.eccel.co.uk
Limit credited
1
X
Please refer to the NXP documentation for more information
Response
description
ACK
1
0x00
Command ID
1
0x6F
MFDF_CREATE_VALUE_FILE
Example:
HOST=>READER: 0x6F – MFDF_CREATE_VALUE_FILE
0x02 – file number
0xEE 0xEE – access rights
0x00 0x00 0x00 0x00 – low limit
0x80 0x00 0x00 0x00 – up limit
0x00 0x00 0x00 0x00 – initial value
0x01 – get free enabled
0x01 – limited credit
READER=>HOST: 0x00 – ACK byte
0x6F – related command code MFDF_CREATE_VALUE_FILE
3.5.17 Get value (0x70)
This command returns the value stored in a value file on the TAG. The returned ACK response contains 4
bytes of signed value, LSB-first.
Command description
Argument
Size
Value
Description
Command ID
1
0x70
MFDF_GET_VALUE
File number
1
X
File
number inside application
Response description
ACK
1
0x00
Command ID
1
0x70
MFDF_GET_VALUE
Value
4
X
4 bytes signed value, LSB first
Example:
HOST=>READER: 0x70 – MFDF_GET_VALUE
0x02 – file number
READER=>HOST: 0x00 – ACK byte
0x70 – related command code MFDF_GET_VALUE
0x05 0x00 0x00 0x00 – 4 bytes signed value, LSB first
3.5.18 Credit file (0x71)
This command increases a value stored in a value file on the TAG.
Command description