Rockwell Automation Publication 2080-UM002G-EN-E - March 2015 67
Chapter
7
Motion Control
Certain Micro830 and Micro850 controllers (see table below) support motion
control through high speed pulse-train outputs (PTO). PTO functionality refers
to the ability of a controller to accurately generate a specific number of pulses at a
specified frequency. These pulses are sent to a motion device, such as a servo
drive, which in turn controls the number of rotations (position) of a servo motor.
Each PTO is exactly mapped to one axis, to allow for control of simple
positioning in stepper motors and servo drives with pulse/direction input.
As the duty cycle of the PTO can be changed dynamically, the PTO can also be
used as a pulse width modulation (PWM) output.
PTO/PWM and motion axes support on the Micro830 and Micro850
controllers are summarized below.
PTO/PWM
(1)
and Motion Axis Support on Micro830 and Micro850
(1)
PWM outputs are only supported on firmware revision 6 and later.
Controller PTO (built-in) Number of Axes
Supported
10/16 Points
(2)
2080-LC30-10QVB
2080-LC30-16QVB
(2)
For Micro830 catalogs, Pulse Train Output functionality is only supported from
firmware revision 2 and later.
11
24 Points
2080-LC30-24QVB
(1)
2080-LC30-24QBB
(1)
2080-LC50-24QVB
2080-LC50-24QBB
22
48 Points
2080-LC30-48QVB
(1)
2080-LC30-48QBB
(1)
2080-LC50-48QVB
2080-LC50-48QBB
33
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