Omron SYSMAC FH Series User Manual page 419

Atn
Getting the arctangent of the specified expression.
Format
Atn(<expression>)
Parameter
Parameter
Data type
name
Integer type
Double
<expression> precision real
number data
type
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#.
X# = 1
XX# = Atn(X#)*180/3.141592
The result is shown below. (The returned value is rounded off to the nearest thousandth.)
XX# = 45.000
Useable Modules
Unit Calculation Macro / Scene Control Macro / Communication Command Macro / Unit Macro
Supported Versions
Version 3.50 or later
Vision System FH/FZ5 Series
User's Manual (Z340)
Expression that gets the arc tangent
WWW.NNC.IR
Description
8
417
Macro Reference