Omron SYSMAC FH Series User Manual

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Macro Reference
417
8
Appendices
Vision System FH/FZ5 Series
User’s Manual (Z340)
Atn
Getting the arctangent of the specified expression.
Format
Atn(<expression>)
Parameter
Return value
Returns the arctangent as a double precision real value in the range -π/2 to π/2 radians.
Description
Gets the arctangent of the expression specified in the <expression> parameter.
To convert the gotten value to an angle, multiply by π/180.
If an incorrect data type is specified for a parameter, a "Type mismatch" error will occur.
If a value is assigned to the return value variable or the variable is not used in an expression, a "Syntax error"
error will occur.
If the format is written incorrectly, such as writing the macro function name incorrectly, omitting a comma, or
omitting a half-width space, a "Syntax error" error will occur.
Usage Cautions
• None.
Example
Gets the arctangent of the variable X#.
The result is shown below. (The returned value is rounded off to the nearest thousandth.)
Useable Modules
Unit Calculation Macro / Scene Control Macro / Communication Command Macro / Unit Macro
Supported Versions
Version 3.50 or later
Parameter
name
Data type Description
<expression>
Integer type
Double
precision real
number data
type
Expression that gets the arc tangent
X# = 1
XX# = Atn(X#)*180/3.141592
XX# = 45.000

Omron SYSMAC FH Series Specifications

General

Brand	Omron
Model	SYSMAC FH Series
Category	Industrial Equipment
Language	English