Siemens SINUMERIK 840Di Function Manual page 2037

Operating mode
Sequential concept for operation of a SINUMERIK control. The following modes are defined:
→ Jog, → MDA, → Automatic.
Oriented spindle stop
Stops the workpiece spindle in a specified angular position, e.g., in order to perform
additional machining at a particular location.
Oriented tool retraction
RETTOOL: In the case of machining interruptions (e.g., in case of tool breakage), the tool can
be retracted a defined distance with a specifiable orientation via a program command.
Overall reset
In the event of an overall reset, the following memories of the → CPU are deleted:
• → RAM
• Read/write area of → load memory
• → System memory
• → Backup memory
Override
Manual or programmable intervention option that allows the operator to override
programmed feeds or speeds in order to adapt them to a particular workpiece or material.
Part program
Series of instructions to the NC that act in concert to produce a particular → workpiece.
Likewise, this term applies to execution of a particular machining operation on a given → raw
part.
Part program management
Part program management can be organized by → workpieces. The size of the user memory
determines the number of programs and the amount of data that can be managed. Each file
(programs and data) can be assigned a name comprising up to 24 alphanumeric characters.
Path axis
Path axes include all machining axes of the → channel that are controlled by the
→ interpolator in such a way that they start, accelerate, stop, and reach their endpoint
simultaneously.
Path feed
Path feed is applicable to → path axes. It represents the geometric sum of the feed rates of
the → geometry axes involved.
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Glossary
Glossary-13