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

Creating a ShopMill program
7.15 Calling technology functions
7.15.2

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)
7.15.3

Checking input parameters

When generating the program, the parameters that are entered are already checked in order
to avoid making incorrect 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 note is also displayed as
The programming can only be completed after the incorrect value has been corrected.
Incorrect parameter values are also monitored with alarms during the cycle runtime.
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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".
tooltip.
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Milling