Installation guide

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Keyword Reference Guide

MN1270 02.2002 117

Mint Example:

HOME.2 = 0 : REM Home axis in a negative direction

PAUSE IDLE.2 : REM Wait for move to complete

POS.2 = -50 : REM Set axis position to -50

PRECISIONOFFSET.2 = -50.0 : REM If axis is at point A of leadscrew then the

REM offset is -50.0

See also:

PRECISIONINCREMENT, PRECISIONMODE, PRECISIONTABLE, BACKLASHMODE

PRECISIONTABLE

Purpose:

Loads the leadscrew compensation tables.

Controllers Supported:

NextMove PCI NextMove PC NextMove BX MintDrive ServoNode 51

  

Mint Format:

PRECISIONTABLE (axis, forwardTable, reverseTable)

Dot Parameters:

Axis – Axis No.

Forward Table – Array of data for the forward table

Reverse Table – Array of data for the reverse table

Attributes:

Controller Read Write Command Multi-

Axis

Scaled Default Range

NextMove



Description:

Leadscrew compensation allows for a precision table, supplied by the leadscrew manufacturer, to be

given to Mint so that it will automatically compensate for positional inaccuracies along the length of the

leadscrew.

The data is specified in an array where the values are the actual positions relative to the end of the

leadscrew. The first element of the array specifies the number of elements in the precision table.

Mint Example:

DIM single(11) = 10, 10.04, 20.02, 30.01, 40.00, 49.99,

59.97, 70.00, 80.00, 90.01, 100.02

The array single contains the compensation data. There are 10 points in the table and the values are the

measured positions along the leadscrew.

For dual table compensation, two tables would be defined, one for forward travel and one for reverse

travel.

Given a leadscrew defined as:

where fwd x are the actual values for travel in direction from A to B and rev x are the actual values for

travel in the direction from B to A. For single table compensation, the fwd x values would apply in both

direction.

If only one table is being defined, then the reverse table is specified is NULL. Whether one or two

tables are used depends on the mode set with

PRECISIONMODE.

fwd 2fwd 1 fwd 3

rev 2 rev 3rev 1

Increment Size