HEIDENHAIN TNC 620 User Manual page 570

16
Test Run and Program Run
16.5 Program run
Any entry into program (mid-program startup)
The BLOCK SCAN function must be enabled and
adapted by the machine manufacturer. Refer to your
machine manual.
With the BLOCK SCAN function you can start an NC program at any
desired NC block. The control factors workpiece machining up to
this NC block into the calculations.
Using the pallet management (option number 22) you
can also use the BLOCK SCAN function in conjunction
with pallet tables.
If you have interrupted n NC program with the INTERNAL STOP soft
key, the TNC automatically offers the interrupted NC block as an
entry point for mid-program startup. This also applies to program
interruptions in external NC programs that have been called up
and are not necessarily located in the directory of the NC program
called up.
If you interrupt the processing of pallet tables,
the control always suggests the first NC block of
the interrupted NC program for the BLOCK SCAN
function.
All required NC programs and tables must be
selected in the Program Run, Single Set and
Program Run, Full Sequence operating modes
(status M) or called up from the NC program.
If the program contains a programmed interruption
before the end of the block scan, the block scan is
interrupted at this point. Press the NC START key to
resume the block scan.
After a block scan, return the tool to the calculated
position with RESTORE POSITION.
Tool data does not take effect until after the tool call
and a subsequent positioning block.
The TNC skips all touch probe cycles in a mid-
program startup. Result parameters that are written
to from these cycles might therefore remain empty.
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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015