S4Start from "main" [WebWare SDK]

bryce268

I have an IRC5 multimove system, and I am trying to remotely start all my tasks from main. To do this, I call S4Start with the "main" argument and the appropriate task ID number for the task I want to start. However, it appears that it only starts the first task when I do this. It is almost like the task ID number argument is not working correctly.

I can call S4Start with an empty program name "" and a task ID number and it works fine.

Any ideas?

hightower

Hi,

 

we had similar problems some time ago and could't make it work. We solved the problem by defining system signals for starting the robots by digital I/O. Then, we write to these signals from our application. You can get more detailed information if you are not familiar to these techniques.

In this case, please provide an email adress.

 

 

bryce268

So after some testing, here is a more specific description of what is happening:

I want to start all the tasks from main in my IRC5 controller using WebWare SDK. I can start tasks one at a time from "main" using S4Start without a problem. However, when one task is already running and I try to start another one, it gives me the Interlink Error -2106, which I think means "Procedure not found".

This does not happen if I call S4Start with an empty procedure name. In that case, all the tasks start from where they are without problems.

Any more ideas?

Thanks.

bryce268

Also, I don't think I can use IO signals to start individual tasks. From what I have seen in the system parameter manual it looks like the system input for Start affects all the tasks. I will have to test this out though.

hightower

Hi again,

yes, you are right. Starting by system signals starts all tasks. It seemed as if this was what you needed ... However, I think you will have to stop all tasks via a system signal, too.

bryce268

You are correct, that does work to start all tasks from main. So I will do it that way for now. However, it seems like I should be able to do that with S4Start as well, maybe there is a bug.

Thanks for your help!

hightower

I share your opinion that there might be a bug. But since when do you expect Interlink to work the way YOU want ? Or, by all means, to be free of bugs ? I apologize (?) for the irony ...

bryce268

This is true. Now I have a problem where if I try to read a string array that contains a comma, it claims that the array data is corrupt. I don't think you have to apologize at all :-)