A
03.04 Appendix
B Terms
Ó Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Operator’s Guide HMI Advanced (BAD) – 03.04 Edition A-481
Frame
A frame is a calculation rule that translates one Cartesian coordinate
system into another Cartesian coordinate system. A frame contains
the components -> zero offset, -> rotation, -> scaling and -> mirroring.
G
General reset
The following memories of the -> CPU are erased by a general reset
operation:
· -> Working memory
· Read/write area of the -> load memory
· -> System memory
· -> Backup memory
Geometry
Description of a -> workpiece in the -> workpiece coordinate system.
Geometry axis
Geometry axes are used to describe a 2- or 3-dimensional area in the
workpiece coordinate system.
Global main
run/subroutine
Each global main run/subroutine can be stored only once under its
name in the directory; the same program name in different directories
with different contents is not possible as a global program.
Ground
"Ground" is the term applied to all the electrically inactive,
interconnected parts of a piece of equipment which cannot carry any
hazardous contact voltage even in the event of a fault.
H
Helical interpolation
The helical interpolation function is ideal for machining internal and
external threads using form milling cutters and for milling lubrication
grooves. The helix comprises two movements:
1. Circular movement in one plane
2. Linear movement perpendicular to this plane.
High-speed digital
inputs/outputs
As an example, high-speed CNC program routines (interrupt routines)
can be started via the digital inputs. High-speed, program-driven
switching functions can be initiated via the digital CNC outputs
(SINUMERIK 840D).
HIGHSTEP
Combination of the programming features for the -> PLC in the
S7-300/400 range.
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