LS 3603-I265A Special Operating Instructions
(73-13583-265)
Revision B: June 2000
7
Note
: All n/a fields must contain a 00h value.
Multiple host commands are verified and exe-
cuted until an error occurs. Once an error oc-
curs a NAK STRING is sent to the host and
further commands are ignored. More specifi-
cally, if a host message is sent to the scanner
that includes three changes to a single parame-
ter host commands, and an error is found in
the second command:
•
The first host command is verified and
executed - the single parameter is
changed
•
The second command is found to con-
tain an error - NAK STRING is sent
•
The third command is ignored.
ACK String
When the LS 3603 receives a host message it
responds to the host to let the host know if the
command was valid. If a configuration com-
mand was successful, the LS 3603 sends an
ACK STRING of the format:
<STX><L1><L2><L3><ACK>
<data><ETX><LRC>
Where:
<L1><L2><L3>= Three byte hexadecimal length of
the data string from STX - LRC.
ACK
= 06h
data
= If the user performed a download
command that did not require in-
formation to be sent to the host
(Change Params or Reset De-
faults) the data is a string of num-
bers that represent the command
values successfully implemented.
See
Host Commands
table for
command values.
If the user requested information
via an upload params or software
ID request, that information is
sent.
