SERVO-CONTROL using MODBUS COMMUNICATIONS
As a demo for an existing customer, Wizardry programmed its PCC control computer,
to control several servo-axes of an existing machine,
using Wizardry's real-time BASIC programming language.
Some of the challenges were:
- Perform positioning with sub-millimeter accuracy.
- Control the existing Allen-Bradley servo-motors, about which essentially no specs were published.
- Interface to the existing Allen-Bradley shaft-encoders, about which essentially no specs were published.
- Use MODBUS communications to the servo-drives.
- Use Wizardry's PCC control computer, originally designed in 1986.
Excellent control of all servo-axes was demonstrated.
All motion end-points, velocities, etc. are software-controlled,
stopping points are precise, and motions are bidirectional.
These videos show example motions:
