Siemens SINUMERIK 828D Function Manual page 1759

Fixed-point approach
Machine tools can approach fixed points such as a tool change point, loading point, pallet change point, etc. in a
defined way. The coordinates of these points are stored in the control. The control moves the relevant axes in →
rapid traverse, whenever possible.
Frame
A frame is an arithmetic rule that transforms one Cartesian coordinate system into another Cartesian coordinate
system. A frame contains the following components: → zero offset, → rotation, → scaling, → mirroring.
Functionality
The path-jerk limitation can be activated/deactivated by programming the setting data.
Value
Parameter:
• Value range: TRUE, FALSE
Application:
• Part program
• Static synchronized action
Geometry
Description of a → workpiece in the → workpiece coordinate system.
Geometry axis
Geometry axes are used to describe a 2- or 3-dimensional area in the workpiece coordinate system.
Ground
Ground is taken as the total of all linked inactive parts of a device which will not become live with a dangerous
contact voltage even in the event of a malfunction.
Helical interpolation
The helical interpolation function is ideal for machining internal and external threads using form milling cutters
and for milling lubrication grooves.
The helix comprises two movements:
• Circular movement in one plane
• A linear movement perpendicular to this plane
High-level CNC language
The high-level language offers: → user-defined variables, → system variables, → macro techniques.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Glossary
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