User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 8 – MIFARE card messages 2015-04-20
Page187
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
‘3’: Card detect fail.
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
HOST Direction PIN pad
Message P16 (request
frame)


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message P16 (response
frame)
<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
