If on error loops

[djayne]

Does anyone use if on error loops in their programs? We have 3 shop floor CMMs w/PCDMIS 3.7MR2. I am responsible for setting these machines up for multiple parts for 100% operator inspections. I'd like to Poka Yoke each program to check for a tooling ball on each fixture. I have designed sub-plates using a ball lock system in which the operator may only put one fixture at a time on the CMM in one specific location. I'd like to program each part to assure the correct program or fixture is in place - I think - with this if on error loop. Also, does anyone know about the PCDMIS operator interface? Any suggestions would be great - we've already had a few minor crashes with the CMMs being dedicated to one part with a fixture that is not moved.

[kbotta]

I believe (they may have changed it) that the if / on error was for unexpected crashes. My controller did not support it the way it should have.
Is this what you were looking for?
kb

[djayne]

Yes - I don't believe my controller must have supported it either - it would just skip the loop and continue on through the program either stopping on a crash or giving a no touch detected when i was testing it. No touch detected was one of the options for the loop.

[BKulpa]

I use onerror and direct to a label.

I use "ONERROR" unexpected probe hit and direct the onerror to a label.
With a hole in the fixture in a know position, I have several move points (with the machine at 10% speed) move in and out of the hole.
Immediately after the label I have:
MOVE/INC 0,0,50
MOVE/INC 0,100,0
COMMENT/OPER/NO/ You have the fixture in the wrong position or the
setup is incorrect.

I have also had the machine measure a circle:
IF: abs(CIR01.X)>.1 or abs(CIR01.Y)>.1
MOVE/INC 0,0,50
MOVE/INC 0,100,0
COMMENT/OPER/NO/ You have the fixture in the wrong position or the
setup is incorrect.
END/IF

After both of these routines I have the program go back to the setup photo.

Remember ONERROR unexpected probe hit will not work the same with a TP200 because the probe is dampened between moves.

Hope this helps