HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 665)

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TNC 407/TNC 415/TNC 425 2 TNC data interfaces 01.98
2.4.1 Saving/reading files
The following table lists all the files which can be saved to external memory (floppy disk unit,
magnetic tape unit and PC) and can be read back in from them.
File File extension Code
HEIDENHAIN Dialog NC program .H H
DIN/ISO NC program .I D
Tool table .T T
Pallet table .P L
Datum table .D N
Machine parameters .MP M
Compensation table .COM V
Compensation Assignment .CMA S
PLC program .PLC P
Text file .A A
Error messages (1st language) .ER1 A
Error messages (English) .ERE A
Dialogs (1st language) .DI1 A
Dialogs (English) .DIE A
Pocket table - R
Help files .HLP J
Pocket tables .TCH R
Help files .HLP J
Point tables .PNT U
After the appropriate key numbers for the PLC, the machine parameters and the correction table
have been entered, these files can be written-to or read-from via the data interfaces.
Data transfer is initiated with the EXT key as usual.
Current values of Q parameters, PLC error messages and dialogs can also be outputted via the two
interfaces (NC program: FN 15: PRINT).
The magnetic tape unit is only suitable as an external data carrier to a limited extent, because only
one file can be stored per cassette side. However, this file can contain several programs.
Using the floppy disk unit, up to 256 programs (approximately 25,000 program blocks) can be
stored. This represents a storage capacity of approximately 790 kilobytes.
When transmitting and receiving a file the appropriate code file is outputted and read in again
complete with a Block Check Character (BCC).
If the file is stored in an external computer using HEIDENHAIN's TNC.EXE data transfer software, a
new file extension is generated. This extension consists of the code and the letters NC.
Example:
If a pallet-table is stored, it is given the file extension *.LNC.