Agilent Technologies TV 301SF Navigator Manual De Istrucciones página 263

The field length is variable according to the data type as per the
following table:
Tab. 5
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>
The controller can answers with the following response types:
Tab. 6
Type
Logic
Numeric
Alphanumeric
TV 301SF Navigator User Manual /
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.
Length
1 byte
6 bytes
10 bytes
87-900-957-01 (H)
Technical Information
RS 232/RS 485 Communication Description
Valid characters
'0' = OFF
'1' = ON
'-', '.', '0' . . . '9' right
justified with '0'
from blank to '_' (ASCII)
Value Description
After a read instruction of a logic
-
window
After a read instruction of a numeric
-
window
After a read instruction of an
-
alphanumeric window
17
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