LS 3603-I265A Special Operating Instructions
(73-13583-265)
Revision B: June 2000
8
If the user downloaded a host message that
contained two host command strings, one to
change a single parameter and one to change a
group of parameters, the ACK String data
would be 01 (30h,31h) to represent the single
(command 0) and group (command 1) com-
mands. The ACK String would be:
<STX><009><ACK><01><ETX><LRC>.
The ASCII representation of this string is:
02h, 30h, 30h, 39h, 06h, 30h, 31h, 03h, LRC.
NAK String
If the download was not successful for any rea-
son (LRC incorrect or the data was invalid) an
error condition occurs and the LS 3603 re-
sponds with a NAK STRING of the format:
<STX><L1><L2><L3><NAK><reason><error
loc1><error loc2><error loc3><ETX><LRC>
Where:
<L1><L2><L3>= Three byte hexadecimal length of
the data string from STX - LRC.
The length is 11 decimal = 0B hex
= 30h,30h,42h.
NAK
=
15h
Reason
A (41h)= Invalid length, the ETX
was not found after the specified
length of a single download com-
mand (defaults, full param down-
load, upload requests), or not
enough data for specified length.
B (42h)= Invalid host command.
C (43h)= Invalid parameter
group.
D (44h)= Invalid parameter iden-
tification.
E (45h) = Invalid parameter val-
ue.
F (46h) = Invalid LRC.
G (47h) = Invalid STX.
H (48h) = Invalid multiple com-
mands (sent to host if single host
command is not send by itself).
