turck BL67 - Page 478

Appendix
D300529 0115 - BL67 I/O modules15-18
The value range:
-200 °C to -0,1°C
is displayed as follows:
830
hex
to FFF
hex
(decimal: -2000 to -1)
The value range:
0 °C to 150 °C
is displayed as follows:
000
hex
to 5DC
hex
(decimal: 0 to 1500)
For representation of resistance values only positive numbers (hexadecimal/binary) are used. The
positive values can easily be converted into decimal ones.
The resistance values can now be calculated according to the parameterization.
The value range:
0 Ω to 100 Ω;
0 Ω to 200 Ω;
0 Ω to 400 Ω;
0 Ω to 1000 W;
is displayed as follows:
000
hex
to FFF
hex
(decimal: 0 to 4095).
The following equations are valid:
 "Resistance, 0 … 100 Ohm":
Resistance value = 0,02442 Ω × decimal value
 "Resistance, 0 … 200 Ohm":
Resistance value = 0,04884 Ω × decimal value
 "Resistance, 0 … 200 Ohm":
Resistance value = 0,09768 Ω × decimal value
 "Resistance, 0 … 1000 Ohm":
Resistance value = 0,24420 Ω × decimal value
Temperature- and voltage values (BL67-2AI-TC)
Before using the equation below, the hexadecimal or binary value has to be converted into a decimal
value. The value is contained in the 3 more significant digit positions of the hexadecimal number or in
the 12 more significant bits of the binary number.
The hexadecimal/binary values for the negative value range cannot easily be converted into decimal
values, because the values are coded as two’s complement (→
page 15-9).
All numerical values from 000
hex
to 7FF
hex
represent positive values when coded as two’s complement.
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".