User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06

Section 8 – MIFARE card messages 2015-04-20

Page182

Uniform Industrial Corp. Proprietary and Confidential Total 342 pages

Message P14 MIFARE Classic Card Value Operation

Format: <STX>P14[Block number][Op mode][Value][Transfer block]

<ETX>[LRC] (request frame)

<STX>P14[Result][Reason]<ETX>[LRC] (response frame)

Message length: Fixed 13, 18 or 21 bytes for request frame

Fixed 7 or 8 bytes for response frame.

Usage: Value operation with block data.

Message element:

Request frame (HOST to PIN pad)

Field Length

Value and description

P14 3 Message ID

[Block number] 3 The block number.

Decimal string: 000~255.

[op mode] 1 Operation mode:

'0' = Create MIFARE Value block.

'1' = Decrement.

'2' = Increment.

'3' = Copy block.

[Value] 8 (Optional), if [op mode] != '3'

Value blocks allow performing electronic purse

functions.

Format: hexadecimal string ( signed integer ).

Ex : 1234567

= 00 12 D6 87

[Transfer block] 3 (Optional), if [op mode] != '0'

The block number.

Decimal string: 000~255.

[LRC] 1 Checksum