User's Manual

44 | P a g e www.eccel.co.uk
Command description
Argument
Size
Value
Description
Command ID
1
0x72
MFDF_LIMITED_CREDIT
File number
1
X
File number inside application
Credit value
4
X
4 bytes signed value, LSB first
Response description
ACK
1
0x00
Command ID
1
0x72
MFDF_ LIMITED_CREDIT
Example:
HOST=>READER: 0x72 – MFDF_ LIMITED_CREDIT
0x02 – file number
0x05 0x00 0x00 0x00 – 4 bytes signed value, LSB
first
READER=>HOST: 0x00 – ACK byte
0x72 – related command code MFDF_ LIMITED_CREDIT
5.5.20 Debit file (0x73)
This command decreases a value stored in a value file on the TAG.
Command description
Argument
Size
Value
Description
Command ID
1
0x73
MFDF_DEBIT
File number
1
X
File number inside application
Credit value
4
X
4 bytes signed value, LSB first
Response description
ACK
1
0x00
Command ID
1
0x73
MFDF_DEBIT
Example:
HOST=>READER: 0x73 – MFDF_DEBIT
0x02 – file number
0x05 0x00 0x00 0x00 – 4 bytes signed value, LSB
first
READER=>HOST: 0x00 – ACK byte
0x73 – related command code MFDF_DEBIT
5.5.21 Create record file (0x74)
This command creates files for multiple storage of structurally similar data within an existing application. If the
cyclic flag is 0x00, then further writing is not possible unless it is cleared. If the cyclic flag is set to 0x01, then
the new record overwrites the oldest record.