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
Page146
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message T71 Send PCD Online Authorized Code
Format: <STX>T71[Online Res]<SUB>[ARC]<SUB>[IAD]<ETX>[LRC]
Message length: Fixed 7 or 16 bytes.
Usage: After receive this message T71, PIN pad will continue to perform the EMV transaction
flow if the previous T62 response result is ‘A1’ (online authorized request, see EMV
Contactless Specifications v2.4). PIN pad will response the message T62 (Start
Transaction Response) to this T71 to host.
Message element:
Field Length Value and description
<STX> 1 <02>
T71 3 Message ID
[Online Res] 1 ‘0’: Unable to go online
<ETX> 1 <03>
[LRC] 1 Checksum
OR
Field Length Value and description
<STX> 1 <02>
T71 3 Message ID
[Online Res] 1 ‘1’: Get Online Authorize Response,
<SUB> 1 <1A>
[ARC] 2 Optional, Authorisation Response code,
ASCII (0~9, A~Z).
<SUB> 1 <1A>
[IAD] 16~32 Optional, Issuer Authentication Data,
Hex string.
if there is IAD response from remote
host , terminal shall send this to PIN
pad.
<ETX> 1 <03>
[LRC] 1 Checksum