TECHNICAL INFORMATION
57
87-900-884-01 (C)
Request is an ASCII character identifying the action that
must be performed by the controller or the requested
information.
Allowed ASCII characters:
•
"A" = START
•
"B" = STOP
•
"C" = Low Speed ON
•
"D" = Low Speed OFF
•
"E" = Request for operational parameters
•
"F" = Pump times zeroing
•
"G" = Parameters reading
•
"H" = Parameters writing
•
"I" = Request for operating status
•
"J" = Request for numerical reading
•
"K" = Request for counters reading.
•
"L" = Software version
•
"N" = Print to host serial mode change
•
"O" = Host to print serial mode change
•
"P" = Front panel operation mode selection
•
"Q" = Remote operation mode selection
•
"R" = RS 232 operation mode selection
•
"S" + "number" = Baud rate selection
The command "N", "O", "P", "Q", "R" and "S" are always
acknowledged in any chosen operation mode.
CRC corresponds to the sum (with inverted sign) of all the
preceding bytes.
e.g., the START command "A" in ASCII code = 41;
inverted it will be: FF + 1 - 41 = BF.
Character
ASCII
Converted ASCII
for CRC calculation
"A"
CRC
41h
-
-
BFh
"B"
CRC
42h
-
-
BEh
"C"
CRC
43h
-
-
BDh
"D"
CRC
44h
-
-
BCh
"E"
CRC
45h
-
-
BBh
"F"
CRC
46h
-
-
BAh
"G"
CRC
47h
-
-
89h
"H"
48h
-
"I "
CRC
49h
-
-
B7h
"J"
CRC
4Ah
-
-
B6h
"K"
CRC
4Bh
-
-
B5h
"L"
CRC
4Ch
-
-
B4h
"N"
CRC
4Eh
-
-
B2h
"O"
CRC
4Fh
-
-
B1h
"P"
CRC
50h
-
-
B0h
"Q"
CRC
51h
-
-
AFh
"R"
CRC
52h
-
-
AEh
"S"
53h
-
-
"ACK"
CRC
06h
-
-
FAh
"NACK"
CRC
15h
-
-
EBh
Answer = after a request from the host, the
Turbo-V 300HT controller will answer in one of the
following ways:
•
ACK
•
NACK
•
Message
When the Request is "A, "B”, "C", "D", "F", "N", "O", "P",
"Q", "R", the Turbo-V 300HT controller will Answer the ACK
or NACK.