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
Page287
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message QB MSR Device (Not) Always Detection
Format: <STX>QB[flag]<ETX>[LRC]
Message length: Fixed 6 bytes.
Usage: If the always detection is turned on, PIN pad will return the magnetic card data each
swipe under idle mode (Terminal does not have to issue message Q1 for each card
data). If this functionality is turned off, terminal should issue message Q1 to get the
magnetic card data.
Note. If the card track is all disabled (refer to message Q4), terminal will always get null magnetic card
data.
Message element: Request fame (HOST to PP791)
Field Length Value and description
<STX> 1 <02>
QB 2 Message ID
[flag] 1 ‘0’: Not always detect
‘1’: Always detect.
<ETX> 1 <03>
[LRC] 1 Checksum
Response fame (PP791 to HOST)
Field Length Value and description
<STX> 1 <02>
QB 2 Message ID
[status] 1 ‘0’ = Setup successfully
‘1’ = Invalid flag
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
HOST Direction PIN pad
Message QB


<ACK> (Good LRC) / <NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message QB(response)
<ACK> / <NAK> /
<EOT>
