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TNC 426/TNC 425/TNC 415 B/TNC 407
4
Programming
4.2 Tools
Each tool is identified by a number.
The tool data, consisting of the
• length L
• radius R
are assigned to the tool number.
The tool data can be entered
• into the individual part program in a G99 block, or
• once for each tool into a common tool table that is stored as a
type .T file.
Once a tool is defined, the TNC associates its dimensions with the tool
number and accounts for them when executing positioning blocks.
The way the tool is used is influenced by several miscellaneous functions
(see page 11-16).
Setting the tool data
Tool numbers
Each tool is identified by a number between 0 and 254.
When the tool data are entered into the program, tool number 0 is auto-
matically defined as having length L = 0 and radius R = 0. In tool tables,
also, tool 0 should be defined with L = 0 and R = 0.
Tool radius R
The radius of the tool is entered directly.
Tool length L
The compensation value for the tool length is measured
• as the difference in length between the tool and a zero tool, or
• with a tool pre-setter.
A tool pre-setter eliminates the need to define a tool in terms of the
difference between its length and that of another tool.
