Error Handling option coding

Jim,
Eh, let's not go out on the limb over thin ice of trusting an operator to manually miss possible form defects...
Try this:



Now the sharp eyed will immediately grin and wag a finger with a stern warning about the danger of Infinite Loops!
Then we add some more fun stuff to the code to fix that:

Do/ and UNTIL are red, so you should re-create a do until, then copy / paste the code between them, copy paste the UNTIL case, and delete the first...
I think your code should do what you are looking for.

Do/ and UNTIL are red, so you should re-create a do until, then copy / paste the code between them, copy paste the UNTIL case, and delete the first...
I think your code should do what you are looking for.

His picture is actually borrowed from the Hex Level 3 training exercise. They printed the Do & Until pair red on purpose to make them stand out.
In fact they have tons of red as the author's coding style was to hand-type add the first half of the logic pair (so it goes red), then the in-between code, then hand-type complete the logic pair - instead of the way you (and I) like of adding the pairs as a set with the drop-down menus and then adding code between them.

IMO, that particular lesson is a bit of ridiculous exercise for 99% of real-world applications, because finding bad roundness is normally not something inspection strives to purposefully skip over and ignore.

The key point to learn from it is the ability to automate changing DCC motion parameters based on conditions found. Jim wanted to include operator actions, so my reply went in that direction with a setup I've employed lots of times: clean the dang part.

Where I work now we run CMMs in a standardized production environment. While it would seem like adding tons of error-handling logic would be beneficial it turns out that the burden of proving out and then supporting and maintaining the far more complex programs ends up costing us more time and effort than making programs simple and rugged that anyone with Level 1 basic skills can quickly troubleshoot.

One key point about logic branches in PC-DMIS is that you cannot stop the program and re-start it at that same spot, you usually have to start over from the beginning as all the dynamic/temporary values of variables and True/False results of IF tests completely disappear and nothing works.