Siemens SINUMERIK 840D sl Function Manual page 779

Positioning axis type 2
Block change at programmed end point of all path axes
Figure 11-2
Properties of type 2 positioning axis
With SW 5 and lower, type 2 positioning axes have the following behavior:
● The block change occurs (NC block finished) when the path axes have reached their
● The positioning axes can traverse across several block boundaries to their programmed
● Since there is no time relationship between "NC block finished" and the point at which
● If a positioning axis is reprogrammed before it has reached the previous position and
● Programming with
● The programmed instruction is effective on a non-modal basis. The geometry and
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Block change with positioning axis type 2, example of sequence
programmed end positions with regard to G601, G602 and G603.
end positions.
type 2 positioning axes reach their programmed end positions, the WAITP coordination
command is provided for the synchronization of the positioning axes (see Section
"Programming").
before the end-of-motion criterion is fulfilled, the "axis cannot be repositioned" alarm is
issued.
POSA[Name] = end point FA[Name] = feed
or abbreviated with
POSA[Name] = end point
in which case the feed is determined by the setting in MD32060 $MA_POS_AX_VELO.
synchronous axes are separated with the instructions from the path axis grouping and
traversed at an axis-specific velocity.
Positioning Axes (P2)
11.6 Block change
779