Siemens SINUMERIK 840DE Programming Manual page 498

Glossary
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 variable
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 -> user-defined variable.
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.
Text editor
See -> editor.
Tool
A tool is a software tool for inputting and changing the -> parameters of a parameter block.
Tools include:
• -> S7 configuration
• S7-TOP
• S7-Info
A part used on the machine tool for machining. Examples of tools include lathe tools, milling
cutters, drills, laser beams, etc.
Tool
A tool is a software tool for inputting and changing the -> parameters of a parameter block.
Tools include:
• -> S7 configuration
• S7-TOP
• S7-Info
A part used on the machine tool for machining. Examples of tools include lathe tools, milling
cutters, drills, laser beams, etc.
Tool Nose Radius Compensation
Contour programming assumes that the tool is pointed. Because this is not actually the case
in practice, the curvature radius of the tool used must be communicated to the control, which
Glossary-22
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals