trajectory_execution.launch.xml

<launch>
  <!-- This file summarizes all settings required for trajectory execution  -->

  <!-- Define moveit controller manager plugin: fake, simple, or ros_control -->
  <arg name="moveit_controller_manager" />
  <arg name="fake_execution_type" default="interpolate" />

  <!-- Flag indicating whether MoveIt is allowed to load/unload  or switch controllers -->
  <arg name="moveit_manage_controllers" default="true"/>
  <param name="moveit_manage_controllers" value="$(arg moveit_manage_controllers)"/>

  <!-- When determining the expected duration of a trajectory, this multiplicative factor is applied to get the allowed duration of execution -->
  <param name="trajectory_execution/allowed_execution_duration_scaling" value="1.2"/> <!-- default 1.2 -->
  <!-- Allow more than the expected execution time before triggering a trajectory cancel (applied after scaling) -->
  <param name="trajectory_execution/allowed_goal_duration_margin" value="0.5"/> <!-- default 0.5 -->
  <!-- Allowed joint-value tolerance for validation that trajectory's first point matches current robot state -->
  <param name="trajectory_execution/allowed_start_tolerance" value="0.01"/> <!-- default 0.01 -->

  <!-- We use pass_all_args=true here to pass fake_execution_type, which is required by fake controllers, but not by real-robot controllers.
       As real-robot controller_manager.launch files shouldn't be required to define this argument, we use the trick of passing all args. -->
  <include file="$(dirname)/$(arg moveit_controller_manager)_moveit_controller_manager.launch.xml" pass_all_args="true" />

</launch>