Rockwell Automation 5720 DriveLogix System - Manual (Page 113)

Publication 20D-UM002C-EN-P - November 2003
Configuring DriveLogix Motion 5-9
Enter the positioning units.
In this example inches are the units. Degrees, pallets,
widgets, etc. could be used.
The Average Velocity Timebase is the sample rate
that is used for the Average Velocity tag in the
controller tags.
Select the Positioning Mode
Enter the Conversion Constant - this is the
number of feedback counts for each
Positioning Unit. In this example the encoder
is attached to a ball screw with a pitch of 5
turns per inch. The encoder has a resolution
of 1024 pulses per revolution that produces
4096 counts of feedback in quadrature mode.
Therefore the Conversion Constant = 4096
×
5 = 20480 counts / inch.
5. Adding the Axis (continued)
Determine how many Output Cam execution nodes
(instances) are created for a specific axis.
The value specified for Execution Target in the MAOC
instruction references a specific instance in which a
value of zero selects the first instance.
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