4 - 48 4 - 48
MELSEC-Q
4 SEQUENCE PROGRAM CONFIGURATION AND EXECUTION
CONDITIONS
4.8.3 BCD (Binary Coded Decimal)
(1) BCD notation
BCD notation is binary expression with a carry similar to that of the decimal
notation.
Though it uses 4-bit representation like hexadecimal notation, it dose not use
letters A to F.
Table 4.4 gives numeric expressions by binary, BCD, and decimal notations.
Table 4.4 Comparison of BIN, BCD, and DEC Numeric Expressions
DEC (Decimal) BIN (Binary)
BCD
(Binary Coded Decimal)
000
111
21010
31111
4 100 100
5 101 101
6 110 110
7 111 111
8 1000 1000
9 1001 1001
10 1010 1 0000
Carry
11 1011 1 0001
12 1100 1 0010
(2) BCD numeric expression
High Performance model QCPU registers (data registers, link registers, etc.)
consist of 16 bits.
Therefore, the numeric values expressed in BCD notation can be stored in each
register within 0 to 9999 range.
To Next Page
Loading...
Need help?
General
