Travel Limit Error (inside travel limits)

Today I got a travel limit error when the hit in question was well within the travel limits. I can move there with the jogbox, or even with a move point command.

If that wasn't strange enough, I get this error on "hit 3 of 4" on a 7 point circle. It never even attempts to take hits 1 & 2. And what about hits 5-7??

I should also mention that this program has been around for a couple of years and has run without any problems until this morning.

I've been using PC DMIS since there was PC DMIS and I've never seen anything like this.

Anyone have any experience with issues like this?

Thanks,

Jon

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louisd over 2 years ago

Home position "pulse" is most often determined using HALL sensor magnets, and have ZERO relevance to the readhead/scales.
Hall sensors are not necessarily very accurate as they are sensing the presence of a magnet stuck to each axis, next to the scale (Usually marked with an "N"). they can shift your home position each time by upwards of 0.200" in each axis, so if you have a component that you are measuring super close to the machine's volumetric extents, re-homing can often render that method of measure sporadically functional and non-functional. lol.
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louisd over 2 years ago

Home position "pulse" is most often determined using HALL sensor magnets, and have ZERO relevance to the readhead/scales.
Hall sensors are not necessarily very accurate as they are sensing the presence of a magnet stuck to each axis, next to the scale (Usually marked with an "N"). they can shift your home position each time by upwards of 0.200" in each axis, so if you have a component that you are measuring super close to the machine's volumetric extents, re-homing can often render that method of measure sporadically functional and non-functional. lol.
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