User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Section 6 – Contact EMV Level 2 transaction messages 2015-04-20
Page102
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
Message T20 Send Issuer Script Command Response
Format: <STX>T20[Status][Reason][Err Message]<ETX>[LRC]
Message length: Variable.
Usage: The message response the command T19.
Message element:
Field Lengt
h
Value and description
<STX> 1 <02>
T20 3 Message ID
Status 1 0:OK ; 1:Fail
Reason 1 Optional. (if Status = 1)
1:Fatal Error
2:Command Format Error
Err Message 8 Optional, if Reason = ‘1’Hex String
<ETX> 1 <03>
[LRC] 1 Checksum
Message flow: Please refer to message T19.