VeriFone MX800 Series - Page 293

IPP MS AND DUKPT COMMUNICATIONS PACKETS
Common Packets
M
X
800 SERIES PROGRAMMERS GUIDE 293
02 RAM Test/Continuous
<SI>0102<SO>{LRC}
IPP7
ACK/NAK/EOT
<SI>14RAM TST BEGIN<SO>{LRC}
ACK/NAK/EOT
ACK
<SI>14RAM TST OK<SO>{LRC} or
<SI>14BAD RAM<SO>{LRC}
ACK/NAK/EOT
EOT to terminate process.
03 PROM Checksum Test
<SI>0103<SO>{LRC}
IPP7
ACK/NAK/EOT
<SI>14xx<SO>{LRC}
where, xx is the one-byte PROM internal
checksum. There are two checksums
inside the IPP:
• The PROM checksum, which is 2-bytes
long and is located at 7FFE/7FFF. This
checksum is for manufacturing
purposes.
• The PROM internal checksum.
ACK/NAK/EOT
EOT to terminate process.
Table 35 Packets 09 and 14 Communication Protocol (Continued)
Master Device
Transmit
Direction
IPP