User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 13 – JPEG File Operation messages 2015-04-20
Page312
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message J6 Play JPEG File
Format: <STX>J6<ETX>[LRC]
Request frame (HOST to PIN Pad)
Message length: Fixed 5 bytes.
Usage: This message is used to play the JPEG files those have been selected from terminal.
Those selected Jpeg files will be showed up sequentially until any operation (swiping
card, pressing any key, tapping screen or receiving command) that changes the display.
Message element:
Request frame
Field Length Value and description
<STX> 1 <02>
J6 2 Message ID
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
HOST Direction PIN Pad
Message J6


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)