Siemens SINUMERIK 840DE Programming Manual page 500

Glossary
Variable definition
A variable definition includes the specification of a data type and a variable name. The
variable names can be used to access the value of the variables.
Velocity control
In order to be able to achieve an acceptable traversing velocity on very short traverse
movements within a single block, predictive velocity control can be set over several blocks (-
> look ahead).
Vocabulary words
Words with a specific notation, which have a defined meaning in the programming language
for -> parts programs.
Working area
Three-dimensional zone, into which the tool tip can be moved on account of the physical
design of the machine tool. See -> protection zone.
Working area limitation
With the aid of the working area limitation, the traversing range of the axes can be further
restricted in addition to the limit switches. One value pair per axis may be used to describe
the protected working area.
Working memory
The working area is a RAM area in the -> CPU, which is accessed by the processor to
access the user program during program execution.
Workpiece
Part to be created/machined by the machine tool.
Workpiece contour
Setpoint contour of the -> workpiece to be created/machined.
Workpiece coordinate system
The starting position of the workpiece coordinate system is the -> workpiece zero. In
machining operations programmed in the workpiece coordinate system, the dimensions and
directions refer to this system.
Workpiece zero
The workpiece zero is the starting point for the -> workpiece coordinate system. It is defined
in terms of the distance from the machine zero.
Glossary-24
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals