HEIDENHAIN TNC 426 B, User Manual

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HEIDENHAIN TNC 426 B, TNC 430 271
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
Example: Q15 = 3^3
Constant ”pi” (3.14159)
e.g. Q15 = PI
Natural logarithm (LN) of a number
Base 2.7183
Example: Q15 = LN Q11
Logarithm of a number, base 10
Example: Q33 = LOG Q22
Exponential function, 2.7183
n
Example: Q1 = EXP Q12
Negate (multiplication by -1)
Example: Q2 = NEG Q1
Drop places after the 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
Rules for formulas
Mathematical formulas are programmed according
to the following rules:
n
Higher-level operations are performed first
(multiplication and division before addition and
subtraction)
12 Q1 = 5 * 3 + 2 * 10 = 35
1st step: Calculation step 5
∗
3 = 15
2nd step: Calculation step 2
∗
10 = 20
3rd step: 15 + 20 = 35
13 Q2 = SQ 10 – 3^3 = 73
1st step: 10
2
= 100
2nd step: 3
3
= 27
3rd step: 100 – 27 = 73
n
Distributive law
for calculating with parentheses
a * (b + c) = a * b + a * c
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MKAP10.PM6 30.06.2006, 07:04 271
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