Agilent Technologies TwisTorr 84 FS AG Serie Manual De Instrucciones página 176

Technical Information
Description
DATA TYPE
Logic (L)
Numeric (N)
Alphanumeric (A)
The addressed SLAVE will respond with an ANSWER whose
structure depends on the MESSAGE type. When the MESSAGE is a
read command, the SLAVE will respond transmitting a string with
the same structure.
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<STX> (Start of transmission) = 0x02
<ADDR> (Unit address) = 0x80 (for RS-232)
<ADDR> (Unit address) = 0x80 + device number (0 to 31) (for RS-
485)
<WIN> (Window) = a string of 3 numeric character indicating the
window number (from "000" to "999"); for the meaning of each
window see the relevant paragraph.
<COM> (Command) = 0x30 to read the window, 0x31 towrite into
the window.
<DATA> = an alphanumeric ASCII string with the data to
bewritten into the window. In the case of a read command, this
field is not present. Field length varies according to the data type
as per the following table:
FIELD LENGTH
1
6
10
- <ETX> (End of transmission) = 0x03
- <CRC> = XOR of all characters subsequent to <STX> and
including the <ETX> terminator. The value is hexadecimal coded
and indicated by two ASCII character.
TwisTorr 84 FS AG Navigator Controller User Manual / 87-901-038-01 (A)
VALID CHARACTERS
"0" = OFF
"1" = ON
"-", ".", "0"..."9" right justified with "0"
From blank to "_" (ASCII)