Delta AH500 Programming Manual page 262

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AH 5 00 Pr ogr am m ing Ma n ua l

Instruction code

Explanation:

The decimal floating-point number in the register specified by S is converted into the

single-precision floating-point number, and the conversion result is stored in the register

specified by D.

Suppose the value in S is 1234, and the value in S+1 is 3. The value in S is converted into

The value in D should be a single-precision floating-point number, and the values in S and S+1

represent the decimal real number and the decimal exponent respectively.

The instruction FBIN is used to convert the decimal floating-point number into the

single-precision floating-point number.

The real number of decimal floating-point numbers range from -9,999 to +9,999, the exponents

of decimal floating-point numbers range from -41 to +35, and the practical range of decimal

floating-point numbers in PLC is between ±1175×10-41 and ±3402×10+35. When the

operation result is zero, SM600 is ON.

When X0.0 is ON, the decimal floating-point number in the register in (D1, D0) is converted into the

single-precision floating-point number, and the conversion result is stored in (D3, D2).

Decimal fl oating-point number

Binary floating-point number

Before the floating-point operation is performed, users have to use the instruction FLT to

convert the binary integer into the single-precision floating-point number. The premise of the

Pulse instruction 32-bit instruction (5 steps) 64-bit instruction

S ： Data source

D ： Conversion result

Mathematic al form

Real number: 23 bits; Ex ponent: 8 bits ; sign: 1 bit

Converting the decimal

floating-point number into the

binary floating-point number

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