
684
Double-precision Floating-point Instructions (CS1-H, CJ1-H, CJ1M, or CS1D Only)
Section 3-16
Flags
Precautions
The source data in words S to S+3 must be in IEEE754 floating-point data for-
mat.
3-16-16 DOUBLE ARC TANGENT: ATAND(856)
Purpose
Calculates the arc tangent of a double-precision (64-bit) floating-point number
and places the result in the specified result words. (The arc tangent function is
the inverse of the tangent function; it returns the angle that produces a given
tangent value.)
This instruction is supported by CS1-H, CJ1-H, CJ1M, and CS1D CPU Units
only.
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
Name
Label
Operation
Error Flag
ER
ON if the source data is not recognized as floating-point
data.
ON if the source data is not a number (NaN).
ON if the absolute value of the source data exceeds 1.0.
OFF in all other cases.
Equals Flag
=
ON if both the exponent and mantissa of the result are 0.
OFF in all other cases.
Overflow Flag
OF
Unchanged
Underflow Flag
UF
Unchanged
Negative Flag
N
Unchanged
ATAND(856)
S
D
S: First source word
D: First destination word
Variations
Executed Each Cycle for ON Condition
ATAND(856)
Executed Once for Upward Differentiation
@ATAND(856)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Not supported.
Block program areas
Step program areas
Subroutines
Interrupt tasks
OK
OK
OK
OK
Area
S
D
CIO Area
CIO 0000 to CIO 6140
Work Area
W000 to W508
Holding Bit Area
H000 to H508
Auxiliary Bit Area
A000 to A956
A448 to A956
Timer Area
T0000 to T4092
Counter Area
C0000 to C4092
DM Area
D00000 to D32764
EM Area without bank
E00000 to E32764
EM Area with bank
En_00000 to En_32764
(n = 0 to C)
Содержание SYSMAC CS Series
Страница 2: ......
Страница 4: ...iv ...
Страница 30: ...xxx ...
Страница 186: ...146 List of Instructions by Function Code Section 2 4 ...
Страница 194: ...154 3 35 4 MOVE BIT MOVBC 568 1273 3 35 5 BIT COUNTER BCNTC 621 1275 3 35 6 GET VARIABLE ID GETID 286 1277 ...
Страница 1320: ...1280 Model Conversion Instructions Unit Ver 3 0 or Later Section 3 35 ...
Страница 1390: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2 ...
Страница 1391: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits ...
Страница 1392: ...1352 ASCII Code Table Appendix A ...
Страница 1404: ...1364 Revision History ...