HEIDENHAIN CNC Pilot 4290 - Manual (Page 187)

HEIDENHAIN CNC PILOT 4290 175
4.15
V
a
riable Pr
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amming
Syntax Mathematical function
+ Addition
– Subtraction
* Multiplication
/ Division
SQRT(...) Square root
ABS(...) Absolute amount
TAN(...) Tangent (in degrees)
ATAN(...) Arc tangent (in degrees)
SIN(...) Sine (in degrees)
ASIN(...) Arc sine (in degrees)
COS(...) Cosine (in degrees)
ACOS(...) Arc cosine (in degrees)
ROUND(...) Round
LOGN(...) Natural logarithm
EXP(...) Exponential function e x
INT(...) Cut decimal places
Only with # variables:
SQRTA(.., ..) Square root of (a 2 +b 2 )
SQRTS(.., ..) Square root of (a 2 –b 2 )
Examples for ”# variables”
. . .
N.. #1=PARA(1,7,3) [transfers ”machine value 1 Z” to
variable #1 ]
. . .
N.. #1=#1+1
N.. G1 X#1
N.. G1 X(SQRT(3*(SIN(30)))
N.. #1=(ABS(#2+0.5))
. . .
4.15 Programming Variables
The CNC PILOT supports NC programs before the program run. The
system therefore differentiates between two types of variables:
■ # variables are evaluated during NC program interpretation.
■ V variables (or events) are evaluated during NC program run.
The following rules apply:
■ Multiplication/division before addition/subtraction
■ Up to 6 bracket levels
■ Integer variables (only for V variables): Integer values between
–32767 .. +32768
■ Real variable (with # and V variable): Floating point numbers with
max. 10 integers and 7 decimal places
■ The variable are kept even if the control was switched off
4.15.1 # Variables
The CNC PILOT uses value ranges to define the scope of variables:
■ #0 .. #29: Channel-dependent, global variable
Can be used for each slide (NC channel). Identical variable numbers
on different slides are no problem.
Global variables are retained after the program has been completed
and can be processed by the following NC program.
■ #30 .. #45 channel independent, global variable
Are available once within the control. If the NC program of a slide
changes a variable, it applies to all slides. The variables are retained
after the program has been completed and can be processed by the
following NC program.
■ #46 .. #50 variables are only used in expert programs
. Do not use these variables in your NC program.
■ #256 .. #285 local variables
are effective within a subprogram.
Reading-in parameter values
Syntax: #1 = PARA(x,y,z)
x = Parameter group
■ 1: Machine parameters
■ 2: Control parameters
■ 3: Setup parameters
■ 4: Machining parameters
■ 5: PLC parameters
y = Parameter number
z = Sub-parameter number
Continued
Program NC blocks containing variable
calculations with ”slide code $..” if your
lathe has more than one slide. Otherwise,
the calculations are repeated.