Symbol LS 3603, Специальные эксплуатационные инструкции

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LS 3603-I265A Special Operating Instructions
(73-13583-265)
Revision B: June 2000
3
<STX><L1><L2><L3>
<Host Command String>
<..more commands if applicable..><ETX><LRC>
Where:
STX = 02h
L1,L2,L3 = Three byte hexadecimal length
of data from STX - LRC. Each
byte of the hexadecimal length
is sent as an ASCII character.
For example, a length of 13
decimal = 00D hex, and
30h,30h,44h ASCII.
ETX = 03h
LRC = This check digit is the exclusive
OR (XOR) of all characters in
the string excluding the STX
character, but including the
ETX character.
The maximum length of the host message is
550 bytes.
Host Command String
Each Host Command String is of the format:
<L1><L2><L3><Host command>
<Param Group><Param ID1>
<Param ID2><Param Values>
Where:
L1,L2,L3 = Three byte hexadecimal length
of Host Command String, from
first byte of host command to
last byte of parameter value.
Host Command = Used to specify command.
Param Group = Used to identify parameter
group.
Param ID1 = Two byte hexadecimal value
Param ID2 transmitted as ASCII, used to
identify parameter offset within
the group.
Param Value = One byte hexadecimal number