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
Page118
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Section 7 Contactless EMV Level 2 transaction messages
Contactless EMV Level2 transaction messages are divided into 2 groups. One is EMV-configuration data
operation messages (T51, T53, T55 ,T75, T77 ) and the other one is EMV-transaction messages (T61, T63,
T65, T6C, T71 and T73).
The PCD EMV transaction messages issuing sequence is control by PIN pad, an invalid sequence will
terminate PCD EMV transaction. Message T61 is used for terminal-side to transmit transaction information
such as amount and then PIN pad do a complete transaction with card if the transaction needs not to be
authorized online. Message T71 is applied if the transaction needs to be authorized online, terminal-side will
transmit necessary information via this message to PIN pad to continue the rest steps of transaction. If the
response from host contains issuer script (see EMV Book), terminal-side applies message T73 to input these
scripts into PIN pad and PIN pad will issue these scripts at appropriate time to card. Message T6C is used to
terminate an EMV transaction. Finally, message T65 is used for terminal-side to get the transaction
information through PCD EMV transaction. The transaction flow chart could be referred in “Overall
Contactless EMV level 2 transaction flow reference” section.