Supported Alteia Protocol Commands and Messages
The changes (compared to RX1290) are denoted with
Yellow backgrounded text
.
4.1.2
Calculating the Checksum
For the entire message up to and including the last underscore, get the value of each
character from the table add them together and then drop all but the first 2
hexadecimal digits. This entire operation is easier done in hex.
For the message \000:SYS;SRQ_ this is
\
0x5C +
0
0x30 +
0
0x30 +
0
0x30 +
:
0x3A +
S
0x53 +
Y
0x59 +
S
0x53 +
;
0x3B +
S
0x53 +
R
0x52 +
Q
0x51 +
_
0x5F = 0x03B5
Only the 2 least significant digits are used for the check sum (that is 0xB5) so the
entire message is
\000:SYS;SRQ_$B5
Cr
Some other examples are:
\000:TUN;SRQ_$AD
Cr
\000:TUN;RFI=NO2_$A4
Cr
\000:SER;SEL=00001_$BC
Cr
Document No. ST.TS.EXXXXX.1 2010-03-04
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