HEIDENHAIN TNC 407 (280 580) User Manual User Manual

Page 59

TNC 425/TNC 415 B/TNC 407

3-11

Test Run and Program Run

TEST RUN:

PROGRAM RUN:

EXT

Fig. 3.1:

TNC screen during blockwise transfer

3.4 Blockwise Transfer: Testing and Executing Long Programs

Part programs that occupy more memory than the
TNC provides can be "drip fed" block by block from
an external storage device.

During program run, the TNC transfers program
blocks from a floppy disk unit or PC through its data
interface, and erases them after execution. This
frees memory space for new blocks. Coordinate
transformations remain active even when the cycle
definition is erased.

To prepare for blockwise transfer:

• Configure the data interface with the MOD

function RS-232/422-SETUP (see page 11-4).

• If you wish to transfer a part program from a

PC, adapt the TNC and PC to each other (see
pages 10-5 and 12-3).

• Ensure that the transferred program meets the

following requirements:
- The program must not contain subprograms.
- The program must not contain program

section repetitions.

- All programs that are called from the trans-

ferred program must be selected (Status M).

PROGRAM RUN / SINGLE BLOCK

PROGRAM RUN / FULL SEQUENCE

TEST RUN

Show directory of files in external storage.
The soft-key row shifts.

Select the program.

Start data transfer.

Transfer and execute the program blocks.

Transfer and test the program blocks.

If the data transfer is interrupted, press the START key again.