User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 7 – Contactless EMV Level 2 transaction messages 2015-04-20
Page144
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message T66 Response of Get Online authorization Data message
Format: <STX>T66[Pkt NO.][Total Pkt][online authorization data]<ETX>[LRC]
Message length: var.
Usage: Return online authorization data to terminal.
Message element:
Field Length Value and description
<STX> 1 <02>
T66 3 Message ID
[Pkt NO.] 1 Decimal. Packet sequence number (1 ~ 9)
[Total Pkt] 1 Decimal. Total packets (1~9).
[Online authorization data] Var. Hex string.
Optional, if this transaction needs to be
authorized online.
<ETX> 1 <03>
[LRC] 1 Checksum
Online authorization data:
PIN pad return series of data object with TLV (tag || length|| value) format as below:
[EMV Tag Number (2 ~ 8 byte)] || [Length (2byte)] || [Value]
[EMV Tag Number (2 ~ 8 byte)] || [Length (2byte)] || [Value]
. . . . . . . .
[EMV Tag Number (2 ~ 8 byte)] || [Length (2byte)] || [Value].
PIN pad can return at maximum 256 bytes of data as one record, the right part of data will be ignored if
the length record is greater than 256 byte.
When PIN pad response these data object, it will convert these value from binary value to hex decimal
string if the data object format is “b” or “cn” or “n”. For example, the data of one record is 0x9F02 || 06 ||
000000001100 || 5A || 10 || 11223344556677889900AABBCCDDEEFF, terminal will see
“9F02060000000011005A1011223344556677889900AABBCCDDEEFF”.
Message flow: Please refer to message T65