User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 9 – Online transaction messages with Master / Session keys 2015-04-20
Page222
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message Z43 Read Key Code Response
Format: <STX>Z43[Keycode]<ETX>[LRC]
Message length: Fixed 7 bytes.
Usage: This is the response frame of Z42.
Message element:
Field Length Value and description
<STX> 1 <02>
Z43 3 Message ID
[keycode] 1 ‘0’ to ‘9’
ASCII ‘A’ to ‘C’ denotes 3 function
keys.
‘A’ = [F1]
‘B’ = [F2]
‘C’ = [F3]
‘*’ = [CAN]
‘#’ = [ENTER]
‘/’ = [CLR]
‘?’ means time out.
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow:
(Please refer to message Z42)