Siemens SINUMERIK 840D sl Function Manual page 164

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2.2 Exact stop

Exact stop criterion "Interpolator End"

In the case of the exact stop criterion "interpolator end" the block change to the next

traversing block takes place, as soon as all path axes and special axes involved in the

traversing motion, which do not traverse extending up to block, have reached their position

according to set point programmed in the block. That is, the interpolator has executed the

The actual position and the following error of the relevant machine axes are not taken into

consideration for exact stop criterion "Interpolator end". Thus, depending on the dynamic

response of the machine axes, this can result in a relatively large smoothing of the contour at

the block changes in comparison to the exact stop criteria "Exact stop coarse" and "Exact

Activation of an exact stop criterion

An exact stop criterion is activated in the part program by programming the following G

Block change depending on exact-stop criteria

The figure below illustrates the block change timing in terms of the selected exact stop

Exact stop fine

Exact stop coarse

Interpolator end

Block change accordance to selected exact stop criterion

Basic logic functions: Continuouspath Mode, Exact Stop, LookAhead (B1)

Function Manual, 11/2006, 6FC5397-0BP10-2BA0

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