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Table for workpiece materials, 14 w o rk ing with cut ting data tables – HEIDENHAIN iTNC 530 (60642x-04) User Manual

Page 476

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476

Programming: Special Functions

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Table for workpiece materials

Workpiece materials are defined in the table WMAT.TAB (see figure).

WMAT.TAB is stored in the TNC:\ directory and can contain as many

materials as you want. The name of the material type can have up to

32 characters (including spaces). The TNC displays the contents of the

NAME column when you are defining the workpiece material in the

program (see the following section).

Defining the workpiece material in the NC program
In the NC program select the workpiece material from the WMAT.TAB

table using the WMAT soft key:

Show the soft-key row with special functions

Select PROGRAM DEFAULTS group

Program the workpiece material: In the Programming

and Editing operating mode, press the WMAT soft

key.

The WMAT.TAB table is superimposed: Press the

SELECTION WINDOW soft key, and in a second

window the TNC displays the list of materials that are

stored in the WMAT.TAB table.

Select your workpiece material by using the arrow

keys to move the highlight onto the material you wish

to select and confirming with the ENT key. The TNC

transfers the selected material to the WMAT block.

To terminate the dialog, press the END key.

If you change the standard workpiece material table, you

must copy it into a new directory. Otherwise your

changes will be overwritten during a software update by

the HEIDENHAIN standard data. Define the path in the

TNC.SYS file with the code word WMAT= (see

"Configuration file TNC.SYS", page 480).
To avoid losing data, save the WMAT.TAB file at regular

intervals.

If you change the WMAT block in a program, the TNC

outputs a warning. Check whether the cutting data stored

in the TOOL CALL block are still valid.