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FM-3 Programming Module Reference Manual

Decelerating

This source is active when the FM-3 module is decelerating. A normal index consists of 3

segments: Accelerating, At Velocity, and Decelerating. Decelerating follows the accelerating

segment and the At Velocity segment. When indexes are compounded to create a complex

motion profile, only the last index may contain a decelerating segment.

Define Home

DefineHome

This destination is used to set the Commanded Position to the value specified in the

DefineHomePosn variable. On the rising edge of this input function the absolute position is

set equal to the DefineHomePosn and the AbsolutePosnValid output function (source) is

activated.

Define Home Position

DefineHomePosn

The DefineHome parameter is used to set the motors absolute position to the value stored in

the DefineHomePosn variable. On the rising edge of the DefineHome function the

Commanded Position is set equal to the DefineHomePosn and the AbsolutePosnValid source

is activated.

Characteristic Distance

DistUnits.CharacteristicDist

This parameter is the distance the load travels (in user units) when the motor travels the

characteristic length (in motor revolutions). This parameter is used along with the

DistUnits.CharacteristicLength to establish the relationship between user distance and actual

motor travel distance. See the section on the User Units View in the Setting Up Parameters

chapter.

Characteristic Length

DistUnits.CharacteristicLength

This parameter is the distance the motor travels (in whole number of revolutions) to achieve

one characteristic distance of load travel. This parameter is used along with the

DistUnits.CharacteristicDist to establish the relationship between user distance and motor

travel distance. See the section on the User Units View in the Setting Up Parameters chapter.

Control Techniques FM-3 User Manual

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