How to make a constant calculation of the remaining length?

No I just changed the value to give in, so I can give in in metres, multiply it by 100 for the calculations, but seems like the rest of the program isn't working well anymore 

ixo65

In the simulation it seems for me that it works correct.

 Oh yes indeed, wasn't looking well, sorry. 

But ofcourse, still that accuracy problem with deviding by 60 to go to seconds.

I guess it will be chosing between accurracy and comfort 

Indeed, I don't have another option I guess, otherways I can only go to 327 meters.

I do also favor an S7-1200 and a HMI, but the costs will be too high (this combination will have to be made around 40 times)

Hello.

You are building a system to detect when a spool is running empty -- right? If I understand the requirement correctly, I would use Rockwell Automation's Micro810. It is a full functioning PLC; LAD, FBD and structured text programming is possible.

Their "CCW" programming software is for free. But the be warned about the LCD screen that connects to it: (1) Not easy to make a program for the LCD. (2) Bought as a separate item.

Ironically a cheap micro-processor board would be easy to use for your requirement.

~

Dear,

I'm still working on the version with the counters, but I'm stuck again.

For the moment, I change the start value manually on the TDE (here: 120000 mm).

But I should want to change that value with two buttons (digital inputs). If i push one button, that value should increase with 10000 (10 m) and if I push the other it should increase with 100000 (100 m). 

Is there a possibility to do that?

Thanks in advance