Siemens SINUMERIK 828D Function Manual page 43

System variable
Read and write access to polynomial coefficients and parameters is also possible from
synchronized actions via the following system variables:
System variable
$AC_FCTLL[<Poly_No>]
$AC_FCTUL[<Poly_No>]
$AC_FCT0[<Poly_No>]
$AC_FCT1[<Poly_No>]
$AC_FCT2[<Poly_No>]
$AC_FCT3[<Poly_No>]
<Poly_No>
Part program
When writing system variables in the part program, preprocessing stop
programmed explicitly for block-synchronous writing.
NOTICE
Block-synchronous writing in the part program
So that the system variables can be written block-synchronously in the part program, the
STOPRE
Synchronized action
When writing system variables in synchronized actions, they take effect immediately.
Use
The function value f(x) of the polynomial can be used as input value in synchronized actions,
e.g. for the following functions:
● "Polynomial evaluation (SYNFCT) (Page 69)"
● "Online tool offset (FTOC) (Page 76)"
Synchronized actions
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
:
:
:
:
:
:
:
command (preprocessing stop) must be used after writing the system variables.
2.3 System variables for synchronized actions
Meaning
Lower limit for function value
Upper limit for function value
a
0
a
1
a
2
a
3
The number specified during the definition of the
polynomial function (see above: Syntax)
Detailed description
must be
STOPRE
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