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
Page46
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
0x83 = Odd parity, 7-bit, 1 stop bit,
with RTS flow control
0xC1 = None parity, 8-bit, 1 stop
bit, with RTS/XON-XOFF flow
control
0xC2 = Even parity, 7-bit, 1 stop
bit, with RTS/XON-XOFF flow
control
0xC3 = Odd parity, 7-bit, 1 stop bit,
with RTS/XON-XOFF flow control
<SO> 1 <0E>
[LRC] 1 Checksum
Response frame (PIN Pad to HOST)
Field Length Value and description
<SI> 1 <0F>
13 2 Message ID
[status] 1 ASCII character
‘0’ for success
‘1’ for parameter error
<SO> 1 <0E>
[LRC] 1 Checksum
Message flow:
HOST Direction PIN Pad
Message 13 (request)


<ACK> (Good LRC)
<NAK> (Bad LRC)
<EOT> (after 3 NAKs)

Message 13 (response)
<ACK>/<NAK>/<EOT>


<EOT>
(Change working baud
rate and save setting)