turck BL20 Series - Page 500

Appendix
Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com
498
Temperature- and voltage values (BL20-2AI-THERMO-PI)
Before using the equation below, the hexadecimal or binary value has to be converted into a deci-
mal value.
The hexadecimal/binary values for the negative value range cannot easily be converted into deci-
mal values, because the values are coded as two’s complement.
All numerical values from 00000
hex
… 7FFF
hex
represent positive values when coded as two’s com-
plement. Values in this range can easily be converted into decimal values. This is also relevant for
binary numbers in which the most significant bit (bit 16) is ”0”.
All numerical values from 8000
hex…
FFFF
hex
represent negative values when coded as two’s comple-
ment. This is also relevant for binary numbers in which the most significant bit (bit 16) is ”1”. Please
see  Example of the conversion of negative numerical value, s. S. 496.
The temperature and voltage values can now be calculated according to the parameterization.
 For the parameterization
”Typ K, -270…1370°C”
”Typ B, +100…1820°C”
”Typ E, -270…1000°C”
”Typ J, -210…1200°C”
”Typ N, -270…1300°C”
”Typ R, -50…1760°C”
”Typ S, -50…1540°C”
”Typ T, -270…400°C”
use the equation:
The value range:
-270 °C…-0,1°C
is displayed as follows:
F574
hex
…FFFF
hex
(decimal: -2700…-1)The value range:
0 °C…1820°C
is displayed as follows:
0000
hex…
4718
hex
(decimal: 0…18200)
The value range:
-50 mV…-0,002 mV;
-100 mV…-0,003 mV;
-500 mV…-0,015 mV;
-1000 mV…-0.031 mV
is displayed as follows:
8000
hex…
FFFF
hex
(deimal: -32768…-1)
resistance value = 0.00305  × decimal value
Temperature value = 0.01 °C × decimal value