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Siemens SINUMERIK 840D Operator's Manual Page 336

Computerized numerical control system for machine tools.
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A
Appendix
B
Terms
Overall reset
Override
P
Parameters
Part program
Parts program
management
Path axis
Path feed
Path velocity
PG
A-336
During a general reset the following memories of the -> CPU are
deleted:
• the -> working memory
• the read/write area of the -> load memory
• the -> system memory
• the -> backup memory
Manual or programmable control feature which enables the user to
override programmed feedrates or speeds in order to adapt them to a
specific workpiece or material.
S7-300: A distinction is made between 2 types of parameters:
1. Parameters of a STEP 7 instruction
A parameter of a STEP 7 instruction is the address of the
operand or a constant to be processed.
2. Parameter of a -> Parameterblock
A parameter of a parameter block determines the behavior of
a module.
A sequence of instructions to the NC control which combine to
produce a specific -> workpiece by performing certain machining
operation on a given -> blank Likewise, performing a certain
machining operation on a specific -> blank.
Part programs can be organized according to -> workpieces. The size
of the user memory determines the number of programs and the
amount of data that can be managed. Each file (programs and data)
can be assigned a name comprising up to 24 alphanumeric
characters.
Path axes are all the machining axes in the -> channel which are
controlled by the -> interpolator such that they start, accelerate, stop
and reach their end positions simultaneously.
Path feed acts on -> path axes. It represents the geometrical sum of
the feeds on the participating -> geometry axes.
The maximum programmable path velocity depends on the input
resolution. For example, with a resolution of 0.1 mm the maximum
programmable path velocity is 1000 m/min.
Programming device
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
A
03.04
 Siemens AG, 2004. All rights reserved

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