5
Technical Information
RS 232/RS 485 Communication Description
86/102 HS452, HS652 Rotary Vane Pumps User Manual / 87-900-978-01 (H)
The controller can answers with the following response types:
Tab. 8
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
Alpha-numeric 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 execution 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
Alphanumeric) is not accorded with
the specified Window
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 (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 <ADDR>
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