Agilent Technologies TPS-mobile Serie Manual De Istrucciones página 378

17 Technical Information
Letter Protocol Description
The field length is variable according to the data type as per the
following table:
Data Type
Logic (L)
Numeric (N)
Alphanumeric (A)
▪
▪
The addressed SLAVE will respond with an ANSWER whose
structure depends from the MESSAGE type. When the MESSAGE is a
reading command, the SLAVE will respond transmitting a string with
the same structure of the MESSAGE.
Using the RS 485 interface, the message structure remains identical to the one
NOTE
used for the RS 232 interface, the only difference being that the value assigned
to the ADDRESS <ADDR>
378/400
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.
Valid Characters
'0' = OFF
'1' = ON
'-', '.', '0' . . . '9' right justified with '0'
from blank to '_' (ASCII)
TPS-mobile User Manual / 87-901-005-01 (F)