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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 answer with the following response types:
Type
Logic
Numeric
Alphanumeric
ACK
NACK
Unknown
Window
Data Type Error
MS120 Single Stage Rotary Vane Pumps (G2571-64000) User Manual/X3702-90000 (A) 184/188
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
Variable
1÷14 bytes
1 byte
1 byte
1 byte
1 byte
Technical Information
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
(0x6)
the command execution has been
successfully completed
(0x15)
the command execution has been failed
(0x32)
the specified window in the command is
not a valid window
(0x33)
the data type specified in the command
(Logic, Numeric or Alphanumeric) is not
accorded with the specified Window
5
User Interface
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