Installation guide

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100

Keyword Reference Guide

MN1270 02.2002 85

See also:

CONFIG, DAC, STEPDIRECTION

GEARING/GR

Purpose:

To set the percentage size for gearing compensation.

Controllers Supported:

NextMove PCI NextMove PC NextMove BX MintDrive ServoNode 51

    

Format:

GEARING[axes] = <expression> {,<expression> ...}

v = GEARING[axis]

Dot Parameters:

Axis - Axis No.

Attributes:

Controller Read Write Command Multi-

Axis

Scaled Default Range

NextMove

 



100.0

-8388607.0 ≤ x ≤

8388607.0

MintDrive &

ServoNode 51

 

100.0

-20000 ≤ x ≤ 20000

Description:

All sampled master / slave systems have an inherent lag in the system. This lag is speed dependant, the

faster the master axis, the larger the lag seen. Gearing compensation can be used to overcome this lag

for the

FOLLOW, FLY and CAM move types.

The

GEARING keyword allows the lag or lead position of the slave axis to be controlled. The default

value is 100% which is 0 lag. A value of 200% will make the slave axis lead the master axis by a value

that is dependent on the slave axis speed. A value of -100% will increase the size of the lag on the

slave. The gearing compensation is based on axis speed, so the actual size of any requested lead or lag

will change at different speeds.

Example:

MASTERSOURCE.0 = 0 : REM Master is axis position

MASTERCHANNEL.0 = 3 : REM Master is axis 3

GEARING.0 = 100.0 : REM Compensate lag

GEARINGMODE.0 = 1 : REM Turn on gearing compensation

FOLLOW.0 = 1.0 : REM Start following the master