West Control Solutions KS98-1 - Manual (Page 115)

III-5.2 ABIN (analog
i binary conversion (No. 71))
Analog input variable x1 is converted into a binary number, a BCD number or a selection “1 out of 8". Thereby, x1 is
always rounded off (down for values < 0,5, up for values ? 0,5).
Simultaneously, binary input values d1...d8 ( considered as a binary number or a BCD number) can be converted into
an analog output variable. The conversion mode is determined by configuration parameter Select.
Analog/binary conversion - binary/analog conversion ( Select = ana<->bin)
Conversion analog value into binary number:
The analog input value at
x1 is converted into a binary variable, which is output in binary form at outputs z1...z8
( z1=2 0 ... z8=2 7 ). The range is within 0...255.
Out of the range, the output allocation is:
Input z1 z2 z3 z4 z5 z6 z7 z8
x1 ß 0 0 0 0 0 0 0 0 0
x1 ? 255 1 1 1 1 1 1 1 1
Conversion binary number into analog value
A binary number at digital inputs
d1...d8 (d1=2 0 ... d8=2 7 ) is converted into an analog output variable and output at
analog output y1. The range is within 0...255.
BCD - conversion ( Select = ana<->BCD) Converting a value into a BCD number
The analog input value at x1 (range 0...99) is output as a BCD number at outputs z8...z5 and z4...z1.
Example: x1 = 83 r the output allocation is:
Input z1 z2 z3 z4 z5 z6 z7 z8
2 2 2 2
x1 = 83 1 1 0 0 0 0 1 1
BCD 3 8
Out of the range, the output allocation is:
Input z1 z2 z3 z4 z5 z6 z7 z8
x1 ? 99 0 0 0 0 0 0 0 0
0 0
x1 ß 0 1 0 0 1 1 0 0 1
9 9
Signal converters 9499-040-82711
III-115 ABIN (analog
i binary conversion (No. 71))
x1
d1
d8
...
z1
z8
y1
...
1 aus 8
BCD
Binär
2
2
2
0
1
7
1 aus 8
BCD
Binär
2
2
2
0
1
7
..
..
..
..
Select
0...255
0...255