about programming

[Chirag03]

Hello everyone,

here i have attached XMl file of my program file, prevously i have used case for programming to move next case. but i am not able to jump to next case instead of signal toggle between true and false after completing first case. 

basically i have made program for 10 point for continous cycle but it only works for perticular 10 point if i only add 5 points instead of 10 then this is not working, therefore i have used case but as i mentioned above case is also not working for random points between 1 to 10. if there any alternative to perform perticular task.

[AndreasL]

It's quite hard to figure out what you're trying to do. 

But I cant find any assignment to the case, for instance point[3]

I usually write sequences in ST like this

CASE Point[3] OF
    1:
        MoveLinearAbsolute[3](ExecuteCmd:= TRUE, ...);

        IF MoveLinearAbsolute[3].Done THEN
            MoveLinearAbsolute[3](ExecuteCmd:= FALSE, ...);

            //  Move to the next state
            Point[3]:= 2;
        END_IF;
END_CASE

But a tip is to use named enumerations for the case, makes it much easer to debug:

https://alltwincat.com/2021/11/16/local-enumerations/

[Chirag03]

Thank you for your Email.

It is robot programming for 10 position which you see in attached XML file and it is completly working continue in cycle. I want to run this program from HMI . There is 10 position pre fix right now and now i want to run 5 or 4 or 3 position instead of  10  position from HMI So according to that, which type of changes i have to do programming.

[CodeShepherd · Accepted solution]

For me the key question is which data is given by the HMI and so the customer?

• If you always have the table of 10 points but not all are filled:
  You just want to run trough used points simply use an if in your case structure to jump to the next one if no point is given.
• If you always have the table of 10 points all are filled:
  You want to limit the number of used points, you have to give some variables like starting number and end number or a list of number that should be run through and then use them to jump to the wanted steps.