HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 210)

7-21 TNC 426/TNC 425/TNC 415 B/TNC 407
7 Programming with Q Parameters
7.7 Entering Formulas Directly
Mathematical function Soft key
Arc sine:
Inverse of the sine. Determine the angle from the
ratio of the opposite side to the hypotenuse.
Example: Q10 = ASIN 0.75
Arc cosine:
Inverse of the cosine. Determine the angle from
the ratio of the adjacent side to the hypotenuse.
Example: Q11 = ACOS Q40
Arc tangent:
Inverse of the tangent. Determine the angle from
the ratio of the opposite to the adjacent side.
Example: Q12 = ATAN Q50
Powers (x y )
Example: Q15 = 3^3
πππππ
(3.14159)
Natural logarithm (LN) of a number,
base 2.7183
Example: Q15 = LN Q11
Logarithm of a number,
base 10
Example: Q33 = LOG 022
Exponential function (2.7183 n )
Example: Q1 = EXP Q12
Negate (multiply by –1)
Example: Q2 = NEG Q1
Drop places after decimal point
(form an integer)
Example: Q3 = INT Q42
Absolute value
Example: Q4 = ABS Q22
Drop places before the decimal point
(form a fraction)
Example: Q5 = FRAC Q23