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
Page136
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message T5D PCD House Keeping Message.
Format: <STX>T5D<SUB>[Config Type]<ETX>[LRC]
Message length: Variable.
Usage: Host can use this command to call PCD housekeeping in PIN pad, this command can
be sent many times.
Message element:
Field Length Value and description
<STX> 1 <02>
T5B 3 Message ID
<SUB> 1 <1A>
Config Type 1 1: Paypass.
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
HOST Direction PIN pad
Message T5D


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message T5E10
<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message T5D


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message T5E10 or T5E1F
<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
