Siemens SINUMERIK 840D Operator's Manual page 164

A
Appendix
B Terms
Tool
Tool
Tool offset
Tool radius
compensation
Transformation
Traversing range
U
User-defined variable
User interface
User memory
A-164
A tool is a software tool for inputting and changing the -> parameters
of a parameter block. Tools include:
• -> S7 configuration
• S7 TOP
• S7 Info
A part used on the machine tool for machining. Examples of tools
include lathe tools, milling cutters, drills, laser beams, etc.
By programming a T function (5 integer decades) in the block, you
can select the tool. Up to 9 cutting edges (D addresses) can be
assigned to every T number. The number of tools to be managed in
the controller is specified in the configuring data.
In order to be able to program a desired -> workpiece contour directly,
the control must traverse a path equidistant to the programmed
contour, taking into account the radius of the tool used. (G41/G42).
Programming in a Cartesian coordinate system, execution in a non-
Cartesian coordinate system (e.g. with machine axes as rotary axes).
The maximum permissible traversing range on linear axes is ± 9
decades. The absolute value depends on the selected input sensitivity
and positioning resolution and the system of units used (inches or
metric).
The user can declare user-defined variables for any use in the ->
parts program or data block (global user data). A definition contains a
data type specification and the variable name. See also -> system
variable.
The user interface (UI) is the display medium for a CNC control in the
form of a screen. It is laid out with eight horizontal and eight vertical
softkeys.
All program and data, such as part programs, subroutines, comments,
tool compensations, and work offsets/frames, as well as channel- and
program user data can be stored in the shared CNC user memory.
SINUMERIK 840D/840Di/810D Operator's Guide Handheld Terminal 6 (BAH) - 03.04 Edition
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03.04
 Siemens AG, 2004. All rights reserved.