15. LASER FUNCTION
(4) If there is no block in which the distance Ls between the current
nozzle position and block start point is shorter than the value set in
parameter 15635 during a near–point search, alarm PS4000 occurs.
(5) If the current nozzle position is near the memorized near–point
search reference position during a near–point search, the nozzle is
moved to the reference position.
(6) No dwell command is executed during a near–point search.
(7) During a near–point search, all M and T codes are output. The PMC
must handle them.
(8) No laser power is output during a near–point search.
(9) If a program to be subjected to a search contains a command related
to a reference position return, include an absolute command after it.
During the search, G27, G28, G29, and G30 are ignored, and the
absolute command is used to re–set the coordinates.
(10) Positioning at the block found in a search is performed for all axes
at a time. When positioning is completed, the nozzle keeps its
attitude for the start point of the block.
(11) In a system provided with attitude control B, alarm PS4002 occurs
if the G53 operation has not been set to the fixed–tip mode (bit 3 of
PRM.15600 (MIA) = 0).
(12) During the G33 mode, positioning is made at the coordinates
specified in the program but not at the end point of an automatically
(13) Do not use gap control for any axis other than the W–axis during a
Specifying Z–axis gap control results in alarm PS4001.
(14) For programs that are to be subjected to a near–point search, it is
impossible to change a work coordinate system.
(15) For programs that are to be subjected to a near–point search, all
manual operations must be performed with ”manual absolute”
turned on no matter whether machining has not been started or has
(16) Once a near–point search is made, manual intervention is impossible
before the program is restarted.
(17) Machine coordinate system–based move commands (G27, G28,
G29, G30, and G53) are ignored during a near–point search.
(18) If the end point of a block is a near point, and the block is followed
by a block with G27, G28, G29, G30, or G53, the latter block is
assumed to be at a near point.