HEIDENHAIN SW 688945-03 - Manual (Page 106)

106 Machine mode of operation
3.9 Pr
ogr
am Run mode
Finding a start block
Mid-program startup means entering into an NC program at a selected
point. In smart.Turn programs you can start the program at any
NC block.
The CNC PILOT starts program run from the cursor position. The
starting position is not changed by a previous graphic simulation.
The selected NC block is the first block run after the mid-program
startup. In the search for a start block, the CNC PILOT brings the
machine into the situation in which it would be in a normal program run
just before the startup block. First the tool is selected, then the axes
are positioned in the configured sequence, and finally the spindle is
switched on.
 The CNC PILOT must be prepared by the machine tool
builder for the mid-program startup function (PLC).
 HEIDENHAIN recommends starting at an NC block
immediately after a T command.
Please note:
 Position the slide with the following conditions:
 The turret can tilt without collision.
 The axes must be able to move to the last
programmed position without collision.
 If a T command is used as the starting block, the turret
moves first to the previous tool and then to the tool
selected in the starting block.