DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

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
S * * *
D *
Operands:
S: Source device (binary floating value) D: Operation result
DATAN, DATANP: 9
steps
PULSE 16-bit 32-bit
ES2/EX2 SS2 SA2
SA2
SA2
SX2 ES2/EX2 SS2 SX2 ES2/EX2 SS2
SE SE SE SX2
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
0
S
-
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
3-325