Review
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This chapter does not aim to reflect the way an operator actually uses his machine. Rather, it attempts to explain certain
basic notions which will be referred to in this manual.
For example, in paragraph 1.2.4 (definition of shifts), the aim is not to impose a method of measuring shifts, but simply
to provide a definition of shifts and the corresponding zero points.
1.1 System Overview
1.1.1 Overview of Modes
The operator uses the numerical control (NC) in various operating modes
accessible from the operator panel.
Each mode corresponds to a particular use of the numerical control
(continuous machining, programme loading, tool setting, etc.).
1.1.2 Defining a Programme
A programme is a sequence of instructions written in a programming language specific to the numerical control (the
most widely used is ISO code: International Standards Organization).
The numerical control interprets the programme to control actions on a machine-tool.
The most widespread storage media for programmes are punched tape and diskettes.
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