Siemens SINUMERIK 840D Operator's Manual page 145

A
03.04
Approach fixed machine
point
Archiving
A-Spline
Asynchronous
subroutine
Automatic
Auxiliary functions
Axes
Axis address
Axis identifier
Axis name
B
Backlash compensation
Backup
 Siemens AG, 2004. All rights reserved.
SINUMERIK 840D/840Di/810D Operator's Guide Handheld Terminal 6 (BAH) - 03.04 Edition
Approach motion towards one of the predefined -> fixed machine
points.
Reading out data and/or directories to an external memory device.
The Akima-Spline runs under a continuous tangent through the
programmed interpolation points (3rd order polynomial).
A parts program which can be started asynchronously to
(independently of) the current program status by an interrupt signal
(e.g. "rapid NC input" signal).
Operating mode of the control (block sequence operation according to
DIN): Operating Mode in NC systems in which a -> parts program is
selected and continuously executed.
Auxiliary functions can be used to transfer -> parameters to the ->
PLC in -> parts programs, where they trigger reactions which are
defined by the machine manufacturer.
In accordance with their functional scope, the CNC axes are
subdivided into:
• Axes: interpolating path axes
• Auxiliary axes: non-interpolating feed and positioning axes with an
axis-specific feed rate. Auxiliary axes are not involved in the actual
machining, and include for example tool feeders and tool
magazines.
See -> axis identifier
Axes are labeled in accordance with DIN 66217 (for a clockwise
orthogonal -> coordinate system) with the letters X,Y, Z.
-> Rotary axes which rotate around are labeled with the letters A, B,
C. Additional axes parallel to the above can be identified with further
address letters.
See -> axis identifier
Compensation for mechanical machine backlash, e.g. backlash on
reversal for feed screws. Backlash compensation can be entered
separately for each axis.
Saving the memory contents to an external memory device.
A
Appendix
B Terms
A-145