Example For Bcd Operating Mode - Eaton easyE4 series Manual

Example for BCD operating mode

For simulation purposes in easySoft 7, function block input I1 can be connected to a
marker double word instead of to a BCD source. The value of this marker double word
can be entered in hexadecimal or decimal format. It will always be interpreted as BCD
at function block input I1.
MD value
(dec) (hex)
9 9
23 17
37 25
18 585 4 899
161 061 273 9 999 999
-161 061 F6 666
273 667
161 061 274
The most significant nibble determines the sign. For negative
numbers, the two's complement will be calculated.
Since each decimal value is represented with four bytes or eight
nibbles and each nibble in the BCD code can assume a value of
9, the largest number that can be represented is 9999999. The
smallest number that can be represented is -9,999,999.
easyE4 11/18 MN050009 EN www.eaton.com
6.1 Manufacturer function blocks
I1
BCD
0000 1001
0001 0111
0010 0101
0000 0000
0000 0000
0100 1000
1001 1001
0000 1001
1001 1001
1001 1001
1001 1001
1111 0110
1001 1001
1001 1001
1001 1001
1001 1001 Value range
1001 1001 exceeded
1001 1001
1001 1001
6. Function blocks
QV
BIN (dec)
0000 1001 9
0001 0001 17
0001 1001 25
0000 0000 4 899
0000 0000
0001 0011
0010 0011
0000 0000 9 999 999
1001 1000
1001 0110
0111 1111
1111 1111 -9 999
0110 0111
999
0110 1001
1000 0001
1001 1001 9 999 999
1001 1001
1001 1001
1001 1001
401