A
03.04 Appendix
B Terms
Global main
program/subroutine
Every global main program/subroutine can only appear once under its
own name in the directory, and it is not possible to have the same
program name in different directories with different contents as a
global program.
Ground
Ground is taken as the total of all linked inactive parts of a device
which will not become live with a dangerous contact voltage even in
the event of a malfunction.
H
Helical interpolation
Helical interpolation is especially suitable for easy machining inside or
outside threads with form cutters and for milling lubrication grooves.
The helix consists of two motions:
1. A circular movement in one plane
2. A linear movement perpendicular to this plane
HIGHSTEP
Summary of the programming options for the -> PLC in the
AS300/AS400 system.
High-level CNC language
The high-level language offers: -> user variable, -> pre-defined user
variable, -> system variable, -> indirect programming, -> mathematical
and trigonometric functions, -> comparison operations and logic
operations, -> program jumps and program branching, -> program
coordination (SINUMERIK 840D), -> macro technology.
High-speed digital
inputs/outputs
The digital inputs can be used for example to start fast CNC program
routines (interrupt routines). The digital CNC outputs can be used to
trigger fast, program-controlled switching functions. (SINUMERIK
840D).
I
Inch system
Dimension system which defines distances in inches and fractions of
inches.
Inclined surface
machining
Drilling and milling operations on workpiece surfaces that do not lie in
the coordinate planes of the machine can be performed easily using
the function "inclined-surface machining".
Increment
Traversed distance information via the number of increments. The
number of increments can be stored as -> setting data or selected
using keys labeled with 10, 100, 1000, 10 000.
Incremental dimension
A destination for axis traversal is defined by a distance to be covered
Siemens AG, 2004. All rights reserved.
SINUMERIK 840D/840Di/810D Operator’s Guide Handheld Terminal 6 (BAH) - 03.04 Edition A-151
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