Rockwell-automation 2080-LC50 Getting Started with Motion Control Usin Manual de usuario descargar pdf (Pagina 71)

Publication 2080-QS001A-EN-E - January 2013 61

Execute Your Motion Control Function Blocks Chapter 5

Execute MC_MoveAbsolute

The MC_MoveAbsolute function block allows you to command an axis to a specified absolute position at the rate of

Velocity, Acceleration, Deceleration, and Jerk inputs specified.

Upper

Limit

Lower

Left

Limit

Home

Sensor

axis moves to absolute position of 300 mm

regardless of the current position.

300 mm

TIP

For MC_MoveAbsolute, direction input is ignored.

IMPORTANT

For MC_MoveAbsolute function block, the position input is the absolute location commanded to

the axis. For MC_MoveRelative, the distance input is the relative location (considering current axis

position is 0) from current position.

IMPORTANT

Absolute move requires that the axis be homed. It is a move to a known position within the

coordinate system, regardless of distance and direction. Position can be negative or positive value.

IMPORTANT

Velocity can be a signed value. Users are advised to use positive velocity.

For MC_MoveRelative and MC_MoveAbsolute function blocks the absolute value of the velocity is

used. Velocity input does not need to be reached if Jerk input is equal to 0.

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Rockwell-automation 2080-LC50 Getting Started with Motion Control Usin Manual de usuario Pagina 71