User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 12 –Display functionality messages 2015-04-20
Page298
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message BD Enable / Disable Screen Saver
Format: <STX>BD[Op]<ETX>[LRC] (request)
<STX>BE[Response]<ETX>[LRC] (response)
Message length: Fixed 6 bytes.
Usage: Use this message to enable / disable screen saver.
Request frame (HOST to PP791)
Field Length Value and description
<STX> 1 <02>
BD 2 Message ID
[Op] 1 '0': Disable screen saver
functionality.
'1': Enable screen saver functionality.
<ETX> 1 <03>
[LRC] 1 Checksum
Response frame (PP791 to HOST)
Field Length Value and description
<STX> 1 <02>
BE 2 Message ID
[Response] 1 '0': Valid parameter.
'1': Invalid parameter.
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
HOST Direction PP791
Message BD (Request)


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
Message BE (response)
<ACK> (Good echo)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)
