Rockwell Automation Publication 2198-UM002L-EN-P - October 2021 427
Appendix F Motor Control Feature Support
Motion Drive Start Instruction Configuration
The MDS instruction is configured in a similar fashion to most motion
instructions, as seen in this example.
Figure 231 - Typical MDS Instruction
The MDS instruction is similar to a Motion Axis Jog (MAJ) instruction,
however, the MDS instruction does not set the acceleration/deceleration rates.
The acceleration rate is dynamically set by the ramp attributes configured in a
Set System Value (SSV) instruction. See Ramp Attributes on page 429
.
Motion Drive Start (MDS) Sample Code
Figure 232 - Start
The speed is increased by updating the speed reference and then re-executing
the MDS instruction.
Figure 233 - Increase Speed
Selected Axis
Motion Instruction Tag
Speed Reference
Units per sec
or
% of Maximum
The K5700_Axis was configured for revolutions. Therefore, the Speed
Units are revolutions per second (rev/s).
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