HEIDENHAIN TNC 426, TNC 430 383
10.9 Entering Formulas Directly
10.9 Entering Formulas Directly
Entering formulas
You can enter mathematical formulas that include several operations
directly into the part program by soft key.
Press the FORMULA soft key to call the formula functions. The TNC
displays the following soft keys in several soft-key rows:
Mathematical function Soft key
Addition
Example: Q10 = Q1 + Q5
Subtraction
Example: Q25 = Q7 – Q108
Multiplication
Example: Q12 = 5 * Q5
Division
Example: Q25 = Q1 / Q2
Opening parenthesis
Example: Q12 = Q1 * (Q2 + Q3)
Closing parenthesis
Example: Q12 = Q1 * (Q2 + Q3)
Square of a value
Example: Q15 = SQ 5
Square root
Example: Q22 = SQRT 25
Sine of an angle
Example: Q44 = SIN 45
Cosine of an angle
Example: Q45 = COS 45
Tangent of an angle
Example: Q46 = TAN 45
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
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