OPERATION15. LASER FUNCTION
The block satisfied as follows is searched for , and the laser nozzle is
positioned to the start point of the block and the machine is set in the feed
1 Where the distance Ls between the start point of the block and the
current position of the laser nozzle does not exceed the distance
specified in a parameter.
2 Where the distance Le between the end point of the block and the
current position of the laser nozzle exceeds Ls.
Procedure for near-point search function
1 Change the mode to MEM.
2 Find the beginning of the program.
3 Turn on the DI signal for near-point search (G226#0 NRSRH).
4 Push the start button.
5 The near-point search is worked above operation.
The near-point search busy signal (F225#1 LNSR) and cycle start
lamp signal (F000#5 STL) is output in searching.
6 The cycle start lamp signal is turned off when the searching is
Turn off the DI signal for near-point search and on the start button
after finishing the search.
And the near-point search busy signal is turned off and the program is
Set the near- point distance in parameter No. 15635.
The laser nozzle is positioned to the start point of the block in case that
the distance between the start point and the cerrent position of the laser
nozzle does not exceed the near- point distance.
(1) The program that is to execute the near–point search function must
be the one that ran by memory operation just before a near–point
search was made. If a near–point search is made without running the
program by memory operation, positioning cannot be performed
correctly. This is because the machine position at the start of a
normal operation is memorized as the reference position for a
near–point search. The buffer used for this purpose is provided to
memorize the machine position related to the program that
performed an automatic operation (MEM, MDI, or DNC) most
recently but not for individual programs. Therefore, no near–point
search can be made after MDI or DNC operation.
(2) When the power was turned off and on gain, it is impossible to make
a near–point search for the program executed before the power was
(3) A near–point search cannot be triggered again when it is already in
progress. Once a near–point search was made and a block was
found, that is, bit 0 of G226 (NRSCH) = 1, bit 1 of F225 (LNSR) =
1, and bit 5 of F000 (STL) = 0, executing a cycle start again results
in alarm PS4000. Before making a re–search, effect a reset.
D Near-point distance