Mc_Moverelative - Allen-Bradley Micro800 General Instructions Manual

MC_MoveRelative

MC_MoveRelative commands a controlled motion of a specified distance relative
to the actual position at the time of the execution.
MC_MoveRelative operation
•
Because the motion direction for a MC_MoveRelative function block is
determined by the current position and the target position, the sign of the
Velocity is ignored.
•
The MoveRelative function block completes with Velocity zero if it is not
aborted by another function block.
•
If the MC_MoveRelative function block is issued when the Micro800
controller axis state is StandStill and the relative distance to move is zero,
the execution of the function block is immediately reported as Done.
•
For a Micro800 controller, the sign of the input Velocity for a
MC_MoveRelative function block is ignored because the motion direction
is determined by the Current position and the Target position.
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
Chapter 17
Motion control instructions
463