Siemens SINUMERIK 840D sl Programming Manual page 204

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Table of Contents

Special Motion Commands

5.11 Programmed end-of-motion criterion

(FINEA, COARSEA, IPOENDA, IPOBRKA, ADISPOSA)

$AA_MOTEND system variable

The set end-of-motion criterion can be scanned by system variable $AA_MOTEND[axis]

$AA_MOTEND[Axis] = 1

$AA_MOTEND[Axis] = 2

$AA_MOTEND[Axis] = 3

$AA_MOTEND[Axis] = 4

$AA_MOTEND[Axis] = 5

$AA_MOTEND[Axis] = 6

The last programmed value is retained after RESET.

/FB1/ Function Manual Basic Functions; Feedrates (V1).

Block change criterion in braking ramp

The percentage value is entered in SD 43600: IPOBRAKE_BLOCK_EXCHANGE. If no value

is specified, the current value of this setting data is effective. The range is adjustable from

Additional tolerance window for IPOBRKA

An additional block change criterion tolerance window can be selected as well as the existing

block change criterion in the braking ramp. Release will only occur when the axis

• as before has reached the specified % value of its braking ramp and

• its current actual or set position is no further than a tolerance from the end of the axis in

For more information on the block change criterion of the positioning axes, please refer to:

/FB2/ Function Manual, Extended Functions; Positioning Axes (P2).

/PG/ Fundamentals Programming Guide; "Feed Control and Spindle Motion".

End-of-motion with "Exact stop fine"

End-of-motion with "Exact stop coarse"

End-of-motion with "IPO–Stop"

Block change criterion braking ramp of

Block change in braking ramp with

tolerance window relative to "set

Block change in braking ramp with

tolerance window relative to "actual

Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0

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