PWM Input

AutoGen_3503031

In a current Project I am using a motor controller that can output specific feedback values over a PWM signal. To be able to use and display these values within the S7-1200 control I am looking for a possibility to measure the duty cycle of these signals.
As the machine is battery operated (the system voltage of 24V can vary from 20 to 26V) it's not really an option to use analog voltage inputs cause there values would vary to much.

The PWM Signal is 24V at a base frequency of 100Hz. The duty cycle is 10-90% (I can also change the settings for this at the motor controller).

Any ideas?

Have a look at the 3rd example in the application example:
S7-1200: Application Examples for High-Speed Counters (HSC)

For sure you will not use the code as is. Focus on the building blocks used. Also refer back to the descriptions of those instructions in the S7-1200 system manual for deeper insights.

What are your thoughts?