Siemens Sinumerik 840D sl Programming Manual page 190

Glossary
Analog input and output modules
Analog input and output modules are sensors for analog process signals.
Analog input modules are used to convert measured analog values into digital values, so
that they can be processed in the CPU. Analog input modules convert digital values into
manipulated variables.
Archiving
Exporting files or directories to an external memory medium.
Asynchronous subprogram
● A part program that can be started with an interrupt signal (e.g., "Rapid NC input signal")
● A part program that can be started with an interrupt signal (e.g. "Rapid NC input signal")
AUTOMATIC or Automatic mode
Operating mode of control system (block sequence according to DIN): Operating mode of
NC controls in which a -> part program is selected and continuously executed.
Auxiliary functions
Auxiliary functions can be used to transfer -> parameters in part programs to the -> PLC,
whereupon reactions defined by the machine manufacturer are triggered.
Axes
CNC axes are set according to their functionality as follows:
● Axes: Interpolatory path axes
● Positioning axes: Non-interpolating infeed and positioning axes with axis-specific
Axis identifier
According to DIN 66217, axes are denoted using X, Y, and Z for a clockwise, rectangular -
> coordinate system.
-> Rotary axes that rotate around X, Y and Z, to which the identifiers A, B and C are
assigned. Additional axes parallel to the mentioned ones can be denoted with other letters.
190
asynchronously (i.e., independently) while a part program is active.
asynchronously (i.e. independent of the current program status).
feedrates; these axes can be traversed beyond the block limits. Positioning axes need
not be involved in the machining of the tool and they contain e.g. tool feeder, tool
magazine etc.
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling