Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 234)

Numbering Systems
Appendix A
AĆ4
Figure A.4
Binary Coded Decimal
0 0 1 0 0 0 1 1 1 0 0 1
2 3 9
10241
0 x 2 3 = 0
0 x 2 2 = 0
1 x 2 1 = 2
0 x 2 0 = 0
0 x 2 3 = 0
0 x 2 2 = 0
1 x 2 1 = 2
1 x 2 0 = 1
1 x 2 3 = 8
0 x 2 2 = 0
0 x 2 1 = 0
1 x 2 0 = 1
2
3
9
10
You can compute the decimal value of a binary number by multiplying each
binary digit by its corresponding place value and adding these numbers together
(Table A.B).
Table A.B
BCD Representation
Place Value
Decimal
Equivalent
2 3
(8)
2 2
(4)
2 1
(2)
2 0
(1)
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
0 1 0 1 5
0 1 1 0 6
0 1 1 1 7
1 0 0 0 8
1 0 0 1 9