Siemens SINUMERIK 840DE Programming Manual page 497

Standard cycles
Standard cycles are available for frequently recurring machining tasks.
• for drilling/milling technology
• for turning technology
In the "Program" operating area, the available cycles are listed under the menu "Cycle
Support". After selecting the desired machining cycle the required parameters for the value
assignment are displayed in clear text.
Structure
The SINUMERIK 840D is integrated as a compact module into theSIMODRIVE 611D
converter system. The dimensions correspond to a 50 mm wide SIMODRIVE 611D module.
The SINUMERIK 840D module comprises the NCU module and the NCU box.
Subblock
Block prefixed by "N", containing information for a machining step, such as position data.
Subroutine
A sequence of instructions in a -> parts program, which can be called repeatedly with various
defining parameters. The subprogram is called from a main program. It is not possible to
block every subroutine against unauthorized reading and displaying. -> Cycles are a form of
subroutine.
Synchronization
Instructions in -> parts programs for coordination of sequences in different -> channels at
specific machining points.
Synchronized actions
1. Auxiliary function output
2. Fast auxiliary function output
Synchronized axes
Synchronized axes take the same time to traverse as the geometry axes take for their path.
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
During 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.
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.
Glossary
Glossary-21