A
PPENDIX
A: S
ERIAL
I
NTERFACE
S
PECIFICATIONS
Electronic Copy of LTI’s UltraLyte User’s Manual – 7
th
Edition June 1998
66
$PLTIT,RQ,ID<CR>
[
<LF>
]
where:
$PLTIT
is the Criterion message identifier
RQ
indicates a request message
ID
indicates the request type
<CR>
[
<LF>
] is a carriage return and
optional linefeed.
The response returned by the instrument is in
the following format:
$PLTIT,ID,
model
,
versionid
*
csum
<CR><LF>
where:
$PLTIT,ID
identifies the message
model
indicates the UltraLyte model (UL100 or
UL200)
versionid
is the version ID of the internal firmware
*csum
is an asterisk followed by a hexadecimal
checksum. The checksum is calculated by
XORing all the characters between the
dollar sign and the asterisk.
<CR><LF>
is a carriage return/line feed combination,
which terminates each Criterion-format
message.
Example Version ID Messages
Request:
$PLTIT,RQ,ID
Response:
$PLTIT,ID,UL100,1.70*44
For Internal Use Only. Not for Distribution.
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