Full - Tecno 12 18 Respuestas Control Y Robotica

The mechanical arm was powered, but the robot was still "blind." It wouldn't move because the logic program had a bug.

Alex connected his laptop to the PLC. He looked at the Ladder Diagram (Diagrama de Contactos).

"I see the problem," he said. "The START button is normally open (NO), and the STOP button is normally closed (NC). The programmer didn't account for the safety interlock."

He needed to implement a logic seal. In the code, he saw:

But he needed the motor to stay on even after releasing the button. He programmed a "Self-Holding" (Enclavamiento) circuit. He added a contact in parallel with the Start button.

He typed the logic: IF (Start OR Motor_Contact) AND NOT (Stop) THEN Motor := TRUE;

He pressed "Compile." The lights on the PLC turned green.