Checking Cycle Parameters; Programming Variables - Siemens SINUMERIK 840D sl Operating Manual

6.9.3

Checking cycle parameters

The entered parameters are already checked during the program creation in order to avoid
faulty entries.
If a parameter is assigned an illegal value, this is indicated in the input screen and is
designated as follows:
● The entry field has a colored background (background color, pink).
● A note is displayed in the comment line.
● If the parameter input field is selected using the cursor, the not is also displayed as
The programming can only be completed after the incorrect value has been corrected.
Faulty parameter values are also monitored with alarms during the cycle runtime.
6.9.4

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
● Variables and expressions cannot be used in fields in which a text is expected (e.g. tool
● Selection fields generally cannot be programmed with variables.
Examples
VAR_A
VAR_A+2*VAR_B
SIN(VAR_C)
Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
tooltip.
the time of programming.
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".
Creating a G code program
6.9 Calling technology cycles
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