User manual

170 Rockwell Automation Publication MOTION-UM003F-EN-P - March 2015
Chapter 7 Commission
Test an Axis with Motion
Direct Commands
Motion direct commands let you issue motion commands while you are online
without having to write or execute an application program. You must be online to
execute a Motion Direct Command. There are several ways to access the Motion
Direct Command.
Motion Direct Commands (MDC) are useful when you are commissioning or
troubleshooting a motion application. During commissioning, you can configure
an axis and monitor the behavior by using Trends in the Controller Organizer.
Use of Motion Direct Commands can fine-tune the system with or without load
to optimize its performance. When testing and/or troubleshooting, you can issue
Motion Direct Commands to establish or re-establish conditions such as Home.
Often during initial development, test the system in small manageable areas.
These tasks include the following:
• Home to establish initial conditions
• Incrementally Move to a physical position
• Monitor system dynamics under specific conditions
Access Motion Direct Commands for an Axis or Group
To access the Motion Direct Commands for the Motion Group or axis, right-
click the Group or Axis in the Controller Organizer and choose Motion Direct
Commands.