VeriFone MX800 Series - Packets 09 and 14: Response Packet to Packet 01

IPP MS AND DUKPT COMMUNICATIONS PACKETS
Common Packets
M
X
800 SERIES PROGRAMMERS GUIDE 291
Packet 06 Length: • MAX: 21 characters
• MIN: 21 characters
Response Sample
Packet
<SI>06246880401A001234SO>{LRC}
Packets 09 and 14:
Response Packet to
Packet 01
In response to packet 01, the IPP returns packets 09 and 14 to the master device:
• Packet 09 is the response packet to packet 01 with diagnostic # 07 (UART
Loopback Test).
• Packet 14 is the response packet to the packet 01 with diagnostics #00, 01,
02, 03, 06, 08, 09, and 10.
Packets 09 and 14 are in the format shown in Table 35.
Table 34 Packet 06 Communication Protocol
Master Device
Transmit
Direction
IPP
<SI>06<SO>{LRC}
• ACK if LRC
• NAK if LRC incorrect
• EOT after 3 NAKs
<SI>06[vvv][dddddd][p][bb][nnnn]<SO>{LRC}
• ACK if LRC
• NAK if LRC incorrect,
the IPP saves serial
number
• EOT after 3 NAKs
EOT