User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 9 – Online transaction messages with Master / Session keys 2015-04-20
Page230
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message flow:
HOST Direction PIN pad
Message Z62


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
(Display [prompt1] and [prompt2] wait for
user enter PIN)

Message 71
(after customer PIN entered)
<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

(Display [proc prompt])