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NEO 2 Interface Developer’s Guide
Copyright © 2019, International Technologies & Systems Corporation. All rights reserved.
310
Command Frame
Byte 0-9
Byte 10
Byte 11
Byte 12 Byte 13
Byte 14 …
Byte 14+n-1
Byte 14+n Byte 15+n
Header Tag &
Protocol
Version
Command
Sub-
Command
Data
Length
(MSB)
Data
Length
(LSB)
Data
CRC (MSB)
CRC (LSB)
ViVOtech2\0
2Ch
0Ah
Variable Variable See Table below
Mifare ePurse Command Data Field
Data Field
Length
(bytes)
Description
Mode, Card Type &
Operation Count
1
7
6
5
4
3
2
1
0
1 = Inc
0 = Dec
Card Type
Operation Count
Increment / Decrement Flag: [Bit 7]
Set to 1 instructs reader to Add to (Credit) amount.
Set to 0 instructs reader to Subtract from (Debit) amount.
Card Type: [Bit 6..4]
This can only indicate Mifare Type A (Standard) card (3, as defined in the “Poll
for Token” command).
Operation Count: [Bit 3..0]
This is the number of operation command blocks contained within the rest of
the Purse Function data area.
Purse Function Blocks Variable [1] Series of any combination of supported Purse Function blocks (Debit/Credit,
Backup). Refer to the description of each individual Command Frame below.