Rockwell Automation 2080-LC50 Getting Started with Motion Control Using a Simulated Axis - Manual (Page 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.