WouterDC1

I need to ensure that a slide driven by a servo motor generates a sinusoidal vibration.

Use a camming. Add a rotary virtual leading axis. Design a sinusoidal cam. Gear your existing axis to the leading axis. Done. There is a question if your HW supports this functionality though.

In case constant amplitude is acceptable for you: a Scotch yoke.

Since you are using a basic PLC (s7-1200), there are lower limits for how fast you can reliably run OB3x without causing problems.

That said, if your OB30 calls are >1 ms (2 or more), and the work done inside OB30 is small, you should be ok.

As for using the LGF function, maybe hold the RESET high and leave the block enabled.  That allows the function to handle all required internal housekeeping while holding the output signal at 0.

WouterDC1

"For my thesis, I need to ensure that a slide driven by a servo motor generates a sinusoidal vibration. To achieve this, I need to generate a sinusoidal signal using TIA Portal, which is then sent to the motor through the PLC."

"It's the first time I'm programming with TIA Portal. I've managed to generate a sinusoidal signal using the SInus function from the LGF library, but I'm struggling to make this signal stop after it has completed "x" amount of periods."

I tried to make the sinus generatotr stop after the Sinus_Value had been equal to 0 zero x amount of times but this doenst seem to werk (i think it is because of the timing of the OB30 and my main OB1) 

Do any of you have a tip of how I can trouble shoot the timing of the networks so I can see why it always counts more then the sepcified amount of periods and why my signal doesnt stop exactly at the point it reaches 0?

thanks in advance