User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 5 – Administration and maintenance messages 2015-04-20
Page37
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message 06 Get Serial Number
Format: <SI>06<SO>[LRC]
<SI>06[string]<SO>[LRC]
Message length: Fixed 5 bytes for requesting message, variable for response message (max 17 bytes.)
Usage: This message is used to get serial number of the PIN Pad. PIN Pad will send the serial
number previously loaded or string of 12 ‘0’s as the serial number if it has not been
loaded. Serial number will be displayed on LCD, too.
Message element:
Request frame (HOST to PIN Pad)
Field Length Value and description
<SI> 1 <0F>
06 2 Message ID
<SO> 1 <0E>
[LRC] 1 Checksum
Response frame (PIN Pad to HOST)
Field Length Value and description
<SI> 1 <0F>
06 2 Message ID
[string] 0..12 String for serial number
<SO> 1 <0E>
[LRC] 1 Checksum
Message flow:
HOST Direction PIN Pad
Message 06 (request)


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message 06 (response frame) or
<EOT> if read error
<ACK> (Good echo)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)


<EOT>