PLC-200 bench: stepper, encoder, DC motor

Run STL with PLS, HDEF and HSC on the trainer's moving parts: stepper that can stall, encoder, DC motor with its sensors, and pulled leads.

Lesson: Pulse outputs (PWM, PTO) and high-speed counters

Virtual PLC-200 bench: stepper, encoder and DC motor

Duty cycle: 0 %
Speed: 0.0 rpm
C0: 0

Pull a lead M+ lead PS lead (I1.1) micro-switch lead (I1.0)

SPEED ADJ100 %

Program (STL)Symbol table

No errors: the program compiles.

SIMATIC S7-200 · CPU 224SFRUNSTOP

I0.0RUN_SW

I0.7CLEAR

I1.0MICROsensor

I1.1PROXsensor

Q0.0MOTOR0

SMB280SMB290

Timet = 0.00 s · 0 scans

The motor turns at about 1 rev/s at full duty, not at all below about 12 % (friction), and ripples with a long PWM period. PS sees the pointer at 0°, the micro-switch at 180°: a crank lifts the barrier arm between them.