Agilent Technologies 969-6500, Руководство пользователя, Страница: 285 / 306

Technical Information
Procedure to Connect the Serial and I/O ports to an External Cable
18
Turbo-V 903 Pumping System User Manual / 87-901-016-01 (A) 285/306
NOTE
Using the RS 485 interface, the message structure remains identical to the one
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:
Table 5 Response types
Type Length Value Description
Logic 1 byte - After a read instruction of a logic
window
Numeric 6 bytes - After a read instruction of a numeric
window
Alphanumeric 10 bytes - After a read instruction of an
alphanumeric window
ACK 1 byte (0x6) The command execution has been
successfully completed
NACK 1 byte (0x15) The command execu-tion has been
failed
Unknown
Window 1 byte (0x32) The specified window in the
command is not a valid window
Data Type Error 1 byte (0x33) The data type specified in the
command (Logic, Numeric or
Alphanu-meric) is not accorded with
the specified Win-dow
Out of Range 1 byte 0x34) The value expressed during a write
command is out of the range value
of the specified window
Win Disabled 1 byte (0x35) The specified window is Read Only
or temporarily disabled (for ex-ample
you can’t write the Soft Start when
the Pump is running)