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101
Handling of Numerical Value
3
SEQUENCE PROGRAMMING
3.21 Handling of Numerical Value
The built-in PLC function has instructions that handle numerical values indicated in 16
bits.
The most significant bit of the 16 bits is used to judge whether the value is positive or
negative. Therefore, the numerical values that can be handled as 16 bits are as
follows.
16 bits: -32768 to 32767
The decimal notation and hexadecimal notation correspond as indicated below.
POINT
•
Numerical value setting method
1) Decimal number
2) Hexadecimal number
Decimal Notation Hexadecimal Notation
32767 H7FFF
to to
5 H0005
4 H0004
3 H0003
2 H0002
1 H0001
0 H0000
-1 HFFFF
-2 HFFFE
-3 HFFFD
-4 HFFFC
-5 HFFFB
to to
-32768 H8000
10 is stored into D10 in BIN.
-10 is stored into D10 in BIN.
10 is stored into D10 in
hexadecimal.