Learn how to set up communication between PLCs and servo drives using pulse control, Modbus, EtherCAT, and Profinet. Includes wiring structure, key parameters, engineering cases, troubleshooting, and best practices for high-precision motion systems. PLC: Programmable Logic Controllers (PLC s) & servo motors are essential components of modern industrial automation systems. PLCs are specialized digital computers that manage and automate industrial activities including managing machinery on factory assembly lines, controlling production. Learn how to control servo motors from a PLC using Allen-Bradley servos and Rockwell Automation's Studio 5000 using a simple-to-understand method. What Is A Servo Motor Anyway? The job of an electric motor is to convert electrical power into rotational power with the use of a rotating magnetic. Modern automation equipment—CNC machines, pick-and-place robots, dispensing systems, feeders—relies heavily on PLC ↔ servo drive communication. However,the real question is:How does this work,and what makes. To control a servo motor with PLC, you first need proper hardware connection. The PLC is connected to a servo drive, not directly to the servo motor.