Programming Variables; Compatibility For Cycle Support; Measuring Cycle Support - Siemens SINUMERIK 840D sl Operating Manual

Creating a ShopMill program

9.17 Measuring cycle support

9.16.5

Programming variables

In principle, variables or expressions can also be used in the input fields of the screen forms
instead of specific numeric values. In this way, programs can be created very flexibly.
Input of variables
Please note the following points when using variables:
● Values of variables and expressions are not checked since the values are not known at the
time of programming.
● Variables and expressions cannot be used in fields in which a text is expected (e.g. tool
name).
An exception is the "Engraving" function , in which you can assign the desired text in the
text field via a variable as "Variable text".
● Selection fields generally cannot be programmed with variables.
Examples
VAR_A
VAR_A+2*VAR_B
SIN(VAR_C)
9.16.6

Compatibility for cycle support

The cycle support is generally upwards compatible. This means that cycle calls in NC programs
can always be recompiled with a higher software version, changed and then run again.
When transferring NC programs to a machine with a lower software version, it cannot be
guaranteed, however, that the program will be able to be changed by recompiling cycle calls.
9.17 Measuring cycle support
Measuring cycles are general subroutines designed to solve specific measurement tasks. They
can be adapted to specific problems via parameter settings.
References
You will find a more detailed description on how to use measuring cycles in:
Programming Manual Measuring cycles / SINUMERIK 840D sl/828D
302
Software option
You require the "Measuring cycles" option to use "Measuring cycles".
Operating Manual, 05/2017, A5E40868956
Milling