HEIDENHAIN TNC 410 ISO Programming - Manual (Page 376)

350 10 Programming: Q Parameters
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Programming example
Calculate an angle with the arc tangent from the opposite side (Q12)
and adjacent side (Q13); then store in Q25.
To select Q parameter functions, press the Q key, or
press the soft key PARAMETER.
For formula input, press the FORMULA soft key.
Enter the parameter number.
Shift the soft-key row and select the arc tangent
function.
Shift the soft-key row and open the parentheses.
Enter Q parameter number 12.
Select division.
Enter Q parameter number 13.
Close parentheses and conclude formula entry.
Example NC block
Parameter no. for result?
N37 Q25 = ATAN (Q12/Q13)
25
12
13