Siemens SINUMERIK 840Di Function Manual page 2043
Basic machine
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Also See for SINUMERIK 840Di:
- Diagnostic manual (880 pages) ,
- Manual (552 pages) ,
- System overview (55 pages)
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TOA unit
Each → TOA area can have more than one TOA unit. The number of possible TOA units is
limited by the maximum number of active → channels. A TOA unit includes exactly one tool
data block and one magazine data block. In addition, a TOA unit can also contain a
toolholder data block (optional).
Tool
Active part on the machine tool that implements machining (e.g., turning tool, milling tool,
drill, LASER beam, etc.).
Tool Nose Radius Compensation
Contour programming assumes that the tool is pointed. Because this is not actually the case
in practice, the curvature radius of the utilized tool must be communicated to the control
which then takes it into account. The curvature center is maintained equidistantly around the
contour offset by the radius of curvature.
Tool offset
Consideration of the tool dimensions in calculating the path.
Tool radius compensation
To directly program a desired → workpiece contour, the control must traverse an equistant
path to the programmed contour taking into account the radius of the tool that is being used
(G41/G42).
Transformation
Additive or absolute work offset of an axis.
Traversing range
The maximum permissible traversing range for linear axes is ± 9 decades. The absolute
value depends on the selected input and positioning resolutions and the basic unit system
used (inches or metric).
User-defined variable
Users can declare their own variables for any purpose in the → part program or data block
(global user data). The data type and variable name are specified in a definition. See
→ System variable.
User interface
The user interface is the display medium of a CNC control in the form of a screen. It features
horizontal and vertical softkeys.
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Glossary
Glossary-19
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