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A
Appendix
Terms
F
Feedrate override
I
Inch system of
measurement
Incremental dimension
M
Machine axes
Machine control panel
Machine coordinate
system
Machine zero
Messages
Metric system
N
NC
O
Operating area
Oriented spindle stop
Override
P
PLC
A-212
The current feedrate setting entered via the control panel of by the
PLC is overlaid on the programmed feedrate (0–200 %). The feedrate
can also be corrected by a programmable percentage factor
(1–200 %) in the machining program.
System of measurement in which distances are measured in inches
and fractions of inches.
A destination for axis traverse is defined by a distance to be covered
and a direction referenced to a point already reached. See also ->
absolute dimension.
Length of the traversing path given by the number of increments. The
number of increments can be stored as -> setting data or selected
using the corresponding 1, 10, 100.
Axes which exist physically on the machine tool.
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 for direct control of the machine tool via the PLC.
System of coordinates (Machine) based on the axes of the machine
tool.
A fixed point on the machine tool which can be referenced by all
(derived) measuring systems.
All messages programmed in the parts program and -> alarms
detected by the system are displayed on the control panel in plain-text
form with date and time and the appropriate symbol for the deletion
criterion. Alarms and messages are displayed separately.
Standardized system of units: the units of measure for length for
example, are mm (millimeter) and m (meter).
Numerical Control
The basic functions of the control are subdivided into individual
operating modes.
Stops the workpiece spindle with a specified orientation angle, e.g. to
perform an additional machining operation at a specific position.
Manual or programmable control feature which enables the operator to
overlay programmed feedrates or speeds to adapt them to a specific
workpiece or material.
Programmable logic controller: A component of the -> NC control: A
control which can be programmed to control the logic on a machine
tool.
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/810D Operator's Guide ManualTurn (BAM) – 08.02 Edition
A
08.02

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