User manual

Rockwell Automation Publication MOTION-UM003F-EN-P - March 2015 87
Configure Axis Scheduling Chapter 3
Motion Utilization
The following values are updated in real time as you change your configuration.
You can see how the utilization metrics are responding to your configuration
changes and you have the option to modify your configuration.
• The yellow! warning indicates that the value is at the borderline of the
controller capabilities.
• The red X next to the Task I/O Cycle warning indicates that the value has
reached beyond what the motion task cycle can handle.
If you find that you are reaching utilization limits and you only have the Base
Update Period that is assigned to axes, start to assign axes to the Alternate Update
Periods.
Table 15 - Utilization Parameter Descriptions
Parameter Description
Estimated Utilization - Motion Estimated utilization assumes basic default configuration with no active
motion planner activity, no transmission statistics, and no cyclic read or write.
The estimated percent of time the controller spends on motion while online.
Logix Controller The estimated percentage of the Logix controller's time that is consumed by a
motion task. If this value exceeds 50%, a warning icon appears. If this value
exceeds 80%, an error icon appears.
Task I/O Cycle The estimated percentage of time available in the update cycle Motion Task to
process input, run motion planner, and send output to motion devices. If this
value exceeds 100%, a warning icon appears. If this value exceeds (200
connection I/O cycle Cycle)%, an error icon appears.
Connection I/O Cycle The estimated percentage of time available in the update cycle for input and
output data transmission over the motion connection. If this value exceeds
80%, a warning icon appears. If the value exceeds 100%, an error icon appears.
Communications Shows the estimated percentage of the communications controller's time that
is consumed to process motion connection packets. If this values exceeds 50%,
a warning icon appears. If this value exceeds 100%, an error icon appears.
Ethernet Media Shows the estimated percentage of Ethernet media bandwidth used by motion
connection packet traffic. If the value exceeds 50%, a warning icon appears. If
the values exceeds 100%, an error icon appears.
Actual Utilization - Motion Actual utilization is based on measurements that are made by the Logix
controller. Actual utilization values may be substantially higher than estimated
utilization values depending on factors such as active motion planner activity,
transmission statistics, and cyclic read or write data.
Logix Controller Shows the actual percentage of the Logix controller's time that is consumed by
motion task.
Task I/O Cycle Shows the actual percentage of time available in the update cycle for motion
task to process input, run motion planner, and send output to motion devices.