Agilent Technologies TV 902 Navigator Notice De Mode D'emploi page 261

The addressed SLAVE will respond with an AN-SWER 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 re-sponse types:
Type
Logic
Numeric
Alphanumeric
ACK
NACK
Unknown
Window
Data Type
Error
Out of Range
Win Disabled
TV 902 Navigator User Manual / 87-900-999-01
RS 232/RS 485 Communication Description
Length Value
1 byte -
6 bytes -
10 bytes -
1 byte (0x6)
1 byte (0x15)
1 byte (0x32)
1 byte (0x33)
(0x34)
1 byte
1 byte (0x35)
(B)
Technical Information
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
The command execution has been
successfully completed
The command execution has been failed
The specified window in the command is
not a valid window
The data type specified in the command
(Logic, Numeric or Alphanumeric) is not
accorded with the specified Window
The value expressed during a write
command is out of the range value of the
specified window
The specified window is Read Only or
temporarily disabled (for example you
can't write the Soft Start when the Pump
is running)
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