accelerating ramp using s7-300

[apetkov5]

Hi all!

I nead to make acceleration ramp using s7-300 plc. Ramp must be outputed to analog output module.
Time of accelerating and min/max bariers must be adjustable.

Is there any pre-made block (like "cont_c" for pid control) or anything similar?

Any ideas?

Thanx!

 

[markdyk]

I don't know if there is a pre made block. But a possible solution is to take 0,1s edge to increase the analog output. With te time of accelarating you can determine the step to make each time you increase the analog output value.

 

[Globe]

Perhaps this block can help you.

https://support.automation.siemens....ampe_1.zip?func=cslib.csFetch&nodeid=29978521

 

[seppoalanen]

Here is raw material for developing.
http://www.plctalk.net/qanda/attachment.php?attachmentid=8870

 

[phanlonghpvn]

Help

Here is raw material for developing.
http://www.plctalk.net/qanda/attachment.php?attachmentid=8870

I saw your project but I dont know how does it work? Could you please explain me how it works?
Thanks so much!