turck BL67 - Equations for 12 Bit Representation

Appendix
D300529 0115 - BL67 I/O modules15-24
4 Add "1" to this inverted number:
1011.0011.0011.0011
0000.0000.0000.0001
1011.0011.0011.0100
5 The number is now coded as a two’s complement and can be converted into a hexadecimal num-
ber.
1011.0011.0011.0100 → B334
6 The result is:
19660,8 → B334
15.3.3 Equations for 12 bit representation
Current values from 0 to 20 mA
The decimal values for the current values from 0 mA to 20 mA can be calculated by means of the fol-
lowing equation:
decimal value = 204,75
1
mA
--------
× current value
The value range:
0 mA to 20 mA
is displayed as follows:
000
hex
to FFF
hex
(decimal: 0 to 4095)
The decimal value can easily be changed into a hexadecimal value.
As the numbers are represented left-justified, a "0" has
to be added to the 3-digit hexadecimal value or
the number has to move one digit to the left.
XXX
hex
→ XXX0
hex
The 12-digit binary number has to be filled with 4 digits of "0" or has to move 4 digits to the left:
XXXX.XXXX.XXXX → XXXX.XXXX.XXXX.0000
NOTE
The 12-bit-representation is "left-justified". The value is
transmitted with 16 bit. The last 4 dig-
its of the binary number or respectively the last digit position of the hexadecimal value are
always "0"!