1210 HEIDENHAIN Technical Manual iTNC 530 HSCI
8.1.10 NC program
Setting "look-
ahead"
In order to adapt the feed rate to the workpiece machining process, the
iTNC 530 precalculates the geometry. This way changes in directions (corners,
curvatures, and changes in curvatures) are detected in time, and the
participating NC axes can be braked or accelerated accordingly.
You can set the number of NC blocks to be used for precalculation. The greater
the number of blocks for advance calculation, the higher the possible feed
rate. Shorter machining times can be achieved.
This improved effect is especially noticeable with many short traverse blocks
in the micron range, which are exported from CAD/CAM files, for example.
However, the default setting of 256 blocks usually suffices.
MP7400 Setting look-ahead
Input: 0: 256 [blocks] (default)
1: 512 [blocks]
2: 1024 [blocks]
Block number
increment for DIN/
ISO programs
In MP7220 enter the block number increment for DIN/ISO programs.
MP7220 Block number increment for DIN/ISO programs
Input: 0 to 250
Finding the block
number
Module 9321 Find the current block number
Please use Module 9322 if possible!
The current block number is ascertained with Module 9321.
Call:
PS B/W/D/K <String number (reserved for future applications)>
CM 9321
PL B/W/D <Current block number>
Error code:
Marker Value Meaning
M4203 0 Block number has been found
1Error
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