Glossary
Basic logic functions: Appendix
26 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Look Ahead
The Look Ahead function is used to achieve an optimal machining speed by looking ahead
over an assignable number of traversing blocks.
Machine axes
Physically existent axes on the machine tool.
Machine control panel
An operator panel on a machine tool with operating elements such as keys, rotary switches,
etc., and simple indicators such as LEDs. It is used to directly influence the machine tool via
the PLC.
Machine coordinate system
A coordinate system, which is related to the axes of the machine tool.
Machine zero
Fixed point of the machine tool to which all (derived) measuring systems can be traced back.
Machining channel
A channel structure can be used to shorten idle times by means of parallel motion
sequences, e.g., moving a loading gantry simultaneously with machining. Here, a CNC
channel must be regarded as a separate CNC control system with decoding, block
preparation and interpolation.
Macro techniques
Grouping of a set of instructions under a single identifier. The identifier represents the set of
consolidated instructions in the program.
Main block
A block prefixed by ":" introductory block, containing all the parameters required to start
execution of a -> parts program.
Main program
The → part program designated by a number or an identifer in which additional main
programs, subroutines, or → cycles can be called.
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