Siemens sinumerik 840D sl Operating Manual page 4

Preface
Standard scope
This documentation only describes the functionality of the standard version. Extensions or
changes made by the machine tool manufacturer are documented by the machine tool
manufacturer.
Other functions not described in this documentation might be executable in the control.
However, no claim can be made regarding the availability of these functions when the
equipment is first supplied or in the event of servicing.
For the sake of simplicity, this documentation does not contain all detailed information about
all types of the product and cannot cover every conceivable case of installation, operation, or
maintenance.
Terms
The meanings of some basic terms used in this documentation are given below:
● Program
● Contour
● Cycle
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4
A program is a sequence of instructions to the CNC which combine to produce a specific
workpiece on the machine.
The term contour refers generally to the outline of a workpiece. More specifically, it refers
to the section of the program that defines the outline of a workpiece comprising individual
elements.
A cycle, such as the tapping cycle, is a subprogram defined in SINUMERIK Operate for
executing a frequently repeated machining operation.
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Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Turning