AH Motion Controller – Operation Manual
5-14
1 10000000011 0111000000000000000000000000000000000000000000000000
2
=C03700000000000
16
Decimal Floating-point Numbers
- Since single-precision floating-point numbers and double-precision floating-point numbers are not widely
accepted by people, they can be converted into decimal floating-point numbers for people to make
judgement. However, as to the operation of the decimal point, the PLC still uses single-precision
floating-point numbers and double-precision floating-point numbers.
- A 32-bibt decimal floating-point number is represented by two consecutive registers. The constant is stored
in the register whose number is smaller while the exponent is stored in the register whose number is bigger.
Take (D1, D0) for example.
10
Decimal floating-point number=[Constant ]*
D0
[Exponent ]
D1
Base number D0=±1,000~±9,999
Exponent D1=-41~+35
The base number 100 does not exist in D0 because 100 is represented by 1,000×10
-1
. In addition, 32-bit
decimal floating-point numbers range from ±1175×10
-41
to ±402×10
+35
.
5.2.18. Strings (“$”)
What strings can process are ASCII codes (*1). A complete string begins with a start character, and ends with an ending
character (NULL code). If what you enter is a string, you can enter 31 characters at most, and the ending character 16#00
will be added automatically in ISPSoft.
1. No string (NULL code) is moved.
2. D0=0 (NULL)
3. The string is an even number.
The string is an odd number.
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