HEIDENHAIN TNC 426 B User Manual page 102

Table for tool cutting materials
Tool cutting materials are defined in the TMAT.TAB table. TMAT.TAB
is stored in the TNC:\ directory and can contain as many material
names as you want (see figure at upper right). The name of the
cutting material type can have a max. of 16 characters (including
spaces). The TNC displays the NAME column when you are defining
the tool cutting material in the TOOL.T tool table.
If you change the standard tool cutting 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 TMAT= (see
"Configuration File TNC.SYS" later in this chapter).
To avoid losing data, save the TMAT.TAB file at regular
intervals.
Table for cutting data
Define the workpiece material/cutting material combinations with
the corresponding cutting data in a file table with the file name
extension .CDT; see figure at center right. You can freely configure
that entries in the cutting data table. Besides the obligatory
columns NR, WMAT and TMAT, the TNC can also manage up to four
cutting speed (Vc)/feed rate (F)combinations.
The standard cutting data table FRAES_2.CDT. is stored in the
directory TNC:\. You can edit FRAES_2.CDT, or add as many new
cutting-data tables as you wish.
If you change the standard cutting data table, you must
copy it into a new directory. Otherwise your changes will
be overwritten during a software update by the HEIDEN-
HAIN standard data (see "Configuration File TNC.SYS"
later in this chapter).
All of the cutting data tables must be stored in the same
directory. If the directory is not the standard directory
TNC:\, then behind the code word PCDT= you must
enter the path in which your cutting data is stored.
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5 Programming: Tools