Agilent Technologies TwisTorr 305 FS User Manual page 202

Technical Information
e.g., the START command "A" in ASCII code = 41; inverted it will be: FF + 1 - 41 = BF.
Table 14
Answer = after a request from the host, the controller will answer in one of the
following ways:
ACK

NACK

Message

When the Request is "A, "B", "C", "D", "F", the controller will answer the ACK or NACK.
202
Character ASCII
"A"
CRC
"B"
CRC
"C"
CRC
"D"
CRC
"E"
CRC
"F"
CRC
"G"
CRC
"H"
"I"
CRC
"J" 4Ah
CRC
"K" 4Bh
CRC
"ACK"
CRC
"NACK"
CRC
Agilent TwisTorr 305 FS Remote Controller User Manual
Converted ASCII for CRC Calculation
41h
-
42h
-
43h
-
44h
-
45h
-
46h
-
47h
-
48h
49h
-
-
-
06h
-
15h
-
-
BFh
-
BEh
-
BDh
-
BCh
-
BBh
-
BAh
-
B9h
-
-
B7h
-
B6h
-
B5h
-
FAh
-
EBh