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-475
Analog input/output
module
Analog input/output modules are signal transducers for analog
process signals.
Analog input modules convert analog measured values into digital
values that can be processed in the CPU.
Analog output modules convert digital values into manipulated
variables.
Approach fixed machine
point
Approach motion towards one of the predefined -> fixed machine
points.
Archiving Exporting files and/or directories to an external storage device.
Asynchronous
subroutine
· A parts program that can be started asynchronously (or
independently) of the current program status by means of an
interrupt signal (e.g. "High-speed NC input" signal).
Automatic
Control system operating mode (block-sequential to DIN): Mode in NC
systems in which a -> parts program is selected and continuously
executed.
Auxiliary functions
Auxiliary functions can be used to pass -> parameters to the -> PLC in
-> parts programs, triggering reactions there which are defined by the
machine manufacturer.
Axes
CNC axes are classified according to their functional scope as:
· Axes: Interpolative path axes
· Positioning axes: Non-interpolative infeed and positioning axes
with axis-specific feedrates; axes can move across block limits.
Positioning axes need not be involved in workpiece machining as
such and include tool feeders, tool magazines, etc.
Axis address
See -> axis identifier
Axis identifier
In compliance with DIN 66217, axes are identified as X, Y and Z for a
right-handed rectangular -> coordinate system.
-> Rotary axes rotating around X, Y, Z are assigned the identifiers A,
B, C. Additional axes, which are parallel to those specified, can be
identified with other letters.
Axis name
See -> axis identifier
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