Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Ebin

3. Instruction Set

API

119

Mnemonic			Operands	Function
D	EBIN	P		Scientific to float conversion

Controllers

ES2/EX2 SS2 SA2 SX2

SE

Type	Bit Devices					Word devices					Program Steps
OP	X	Y	M	S	K	H KnX KnY KnM KnS T	C	D	E	F	DEBIN, DEBINP: 9 steps
S								*
D								*
						PULSE			16-bit		32-bit

ES2/EX2	SS2	SA2	SX2	ES2/EX2	SS2	SA2	SX2	ES2/EX2	SS2	SA2	SX2
		SE				SE				SE

Operands:

S: Source device D: Conversion result

Explanation:

1.The instruction converts the decimal floating point value in S to a binary floating point value and stores the results in the register specified by D.

2.For example, S = 1234, S +1 = 3. The decimal floating point value will be: 1.234 x 106

3.D must be binary floating point format. S and S +1 represent the real number and exponent of the floating point number.

4.EBIN instruction is the specific instruction used to convert decimal floating point value to binary floating point value

5.Range of real number: -9,999 ~ +9,999. Range of exponent: - 41 ~ +35. Range of PLC decimal floating point value. If the conversion result is 0, zero flag M1020 = ON.

Program Example 1:

When X1 = ON, the decimal floating point value in (D1, D0) will be converted to binary floating point and the conversion result is stored in (D3, D2).

X1			DEBIN	D0	D2
		Exponent Real number
Decimal			D1	D0	Real number Exponent
Floating Point					[D1]
					[D0] * 10
	Binary				23 bits for real number
			D3	D2	8 bits for exponent
Floating Point
					1 bit for sign bit

Program Example 2:

1.Use FLT instruction (API 49) to convert BIN integer into binary floating point value before performing floating point operation. The value to be converted must be BIN integer and use DEBIN instruction to convert the decimal floating point value into a binary one.

2.When X0 = ON, move K314 to D0 and K-2 to D1 to generate decimal floating point value (3.14 = 314 × 10-2).

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