Cos Operation On Floating-Point Data (Double Precision) - Mitsubishi Electric MELSEC-Q/L Programming Manual

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Table of Contents

COS operation on floating-point data (double precision)

(S): Angle data of which the COS (cosine) value is obtained or head number of the devices where the angle data is stored (real number)

(D): Head number of the devices where the operation result will be stored (real number)

Internal device

Processing details

• The COS (cosine) value of the angle specified by (S) is calculated and its result is stored into the device specified by (D).

64-bit floating-point

• Angles designated at (S) are set in radian units (degrees   / 180). For conversion between degrees and radian values,

see the RADD and DEGD instructions.

• When the operation results in -0 or an underflow, the result is processed as 0.

• When an input value is set using a programming tool, a rounding error may occur. For precautions, refer to Page 89

Precautions.

Operation error

• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.

Error details

The specified device value is not within the following range:

 | Specified device value | <2

The value of the specified device is -0, a subnormal number, NaN (not a

number), or .

The operation result exceeds the following range.

(when an overflow occurs)

|Operation result| < 2

An error occurred during operation.

7 APPLICATION INSTRUCTIONS

7.12 Special Function Instructions

64-bit floating-point