User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 11 – ICC / SAM / Magnetic stripe card manipulating messages 2015-04-20
Page261
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message I00 Query Primary Smart Card Presence
Format: <STX>I00<ETX>[LRC] (request)
<STX>I00[response]<ETX>[LRC] (response)
Message length: Fixed 6 bytes (request frame) / 7 bytes (response frame).
Usage: Upon receiving a query card packet, PP791 checks whether the card is present in the
primary card reader or not. If the card exists in the reader, PP791 replies the code ‘F’.
Otherwise, the code ‘0’ is used instead.
Request frame (HOST to PP791)
Field Length Value and description
<STX> 1 <02>
I00 3 Message ID
<ETX> 1 <03>
[LRC] 1 Checksum
Response frame (PP791 to HOST)
Field Length Value and description
<STX> 1 <02>
I00 3 Message ID
[Response] 1 0: Smart card not exists.
F: Smart card exists
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
HOST Direction PP791
Message I00 (Request)


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
Check card existence
Message I00 (response)
<ACK> (Good echo)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
