Inficon IC6, Operating Manual

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IC6 Operating Manual
10.4.35.33 Example for Interpreting Float Responses
Command used: SS 6 1, Status Sensor, Z-Ratio, Sensor 1
NOTE: Data is shown in Hex format for convenience. Actual data transmission is
in binary. Commas have been inserted for clarity.
Sent to IC6:
04,00,53,53,06,01,AD
Response from IC6:
07,00,00,AA,06,1F,85,45,41,DA
Float portion of response from IC6 (low to high):
1F,85,45,41
Reverse the float response, so it is now high to low:
41,45,85,1F
Convert each byte to its binary equivalent (you can do this using a scientific
calculator) to produce the 32 bit float response:
Rearrange the 32 bits making up the float response into packets of 1, 8, and 23 bits,
representing the Sign, Exponent, and Mantissa, respectively:
Rewrite the current value in binary scientific notation.
The Sign "
0
" means that the sign of the decimal number is positive.
Using a scientific calculator, convert the Exponent value to decimal. In this case,
the decimal value will be
130
. Now, subtract
127
from
130
and you get
3
, the
actual exponent value (You must always subtract
127
from the exponent decimal
value).
Insert the Mantissa to the right of the decimal point.