A
03.04 Appendix
B Terms
Synchronized axes
Synchronized axes take the same time to traverse as the geometry
axes take for their path.
Synchronized actions
1. Auxiliary function output
During the workpiece machining, technology functions (-> auxiliary
functions) can be issued from the CNC program to the PLC. These
auxiliary functions are used for example to control additional
equipment for the machine tool, such as quills, grabbers, clamping
chucks etc.
2. Fast auxiliary function output
For switching functions which are time-critical, the confirmation
times for the -> auxiliary functions are minimized, and unnecessary
stopping points in the machining process can be avoided.
System memory
The system memory is a memory in the CPU in which the following
data are stored:
• Data required by the operating system
• The operands times, counters, markers
System variables
A variable, which exists although it has not been programmed by the -
> parts program programmer. It is defined by a data type and the
variable name preceded by the character $. See also -> user-defined
variable.
T
Tapping without a
compensating chuck
This function allows threads to be tapped without a compensating
chuck. By using the method whereby the spindle, as a rotary axis, and
the drilling axis interpolate, threads can be cut to a precise final drilling
depth (e.g. for blind hole threads) (requirement: spindles in axis
operation).
Teach In
Teach In can be used to create or correct parts programs. The
individual program blocks can be input via the keyboard and traversed
immediately. Positions approached via the direction keys or the
handwheel can also be saved. Additional details such as G functions,
feeds or M functions can be input in the same block.
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Siemens AG, 2004. All rights reserved.
SINUMERIK 840D/840Di/810D Operator’s Guide Handheld Terminal 6 (BAH) - 03.04 Edition A-163
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