HS452, HS652 Rotary Vane Pumps - Agilent Technologies

Technical Information
RS 232/RS 485 Communication Description
5
The controller can answers with the following response types:
Tab. 8
Type Length Value Description
Logic 1 byte -
Numeric 6 bytes -
Alpha-numeric 10 bytes -
ACK 1 byte (0x6)
NACK 1 byte (0x15)
Unknown Window 1 byte (0x32)
Data Type Error 1 byte (0x33)
Out of Range 1 byte (0x34)
Win Disabled 1 byte (0x35)
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 (some
values cannot be changed while
pump is running)
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
HS452, HS652 Rotary Vane Pumps User Manual / 87-900-978-01 (L) 109/126