Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Mnemonic Operands Function 135, Arc Tangent, DATAN, Datanp

3. Instruction Set

API		Mnemonic			Operands	Function
135	D		ATAN	P		Arc Tangent

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

DATAN, DATANP: 9

S

*

*

*

steps

D

*

16-bit

PULSE

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

S: Source device (binary floating value) D: Operation result

Explanations:

1.ATAN instruction performs arc tangent operation on S and stores the result in D

2.ATAN value=TAN-1

3.See the figure below for the relation between the input and the result:

R

S:Input (TAN value)

R:Result (ATAN value)

2

	S
0

-2

4.If operation result in D is 0, Zero flag M1020 = ON.

Program Example:

When X0 = ON, DATAN instruction performs arc tangent operation on the binary floating value in (D1, D0) and stores the ATAN value in (D11, D10) in binary floating format.

X0

	DATAN	D0	D10
D1	D0	Binary floating point

D11	D10	ATAN value
		binary floating point

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