Centroid reverses the Y direction when using setup feature

[ronster]

When I use the Centroid part setup utility, I must place actual probe in the opposite direction the software indicates the travel to be. For example, if I have the probe sitting positive side to travel to the negative I must reverse the software selection to the negative traveling to the positive. It doesn't matter which side I choose I must always reserve it. I have my Y homing negative and the positive is towards the mast of my PM-25. I have the drive running CCW which helps the homing, but I have tried changing direction using the Wizard, but none of that helps with this problem. It just adds to confusing of a standard setup.
When I do run a part the graph is backwards of the actual travel which is very confusing.
Help help.

[suntravel]

Y Drive is in the wrong direction, home with M92 not M91...

Uwe

[cnckeith]

hello.
yep classic directions not setup correctly.
go back to basics jogging is tool motion, which way does the table move when you press positive jog key?

[ronster]

Thanks for reply. I just this morning moved my Y homing switch towards the positive part of the table from the negative as I had it. I changed to Y homing in Wizard from 91 to 92. Y will not home towards the switch. From the PLC the positive arrow moves the Y negative and the plus moves negative. When I had the switch mounted away from the positive, which I understand is the mast portion of the system, the plus and minus arrows moved the Y correctly as they were supposed to do, but I set the drive for CCW. I had the wizard set to M91 for Y. Everything worked physically except any part setup feature for Y must be reversed in order the move the probe toward the part rather than away. The graph was correct, but the movement indicator was backwards and but accurate.
Now, I cannot home automatically since Y always moves away from positive towards the old negative position. I am using the manual homing and setting home by bumping the switches.

I hope this isn't too confusing, but there is a problem I cannot resolve without help.

[suntravel]

If the table is moving towards the collum, that is -Y direction, so if the table is moving away from the collum it moves positive, M92 must be used for home if the table must move away from to collum to the home switch.
Set up the drive direction that this is moving this way.

Uwe

[ronster]

Holy cow. That's way I had it to start with! My homing switch was mounted near the X table homing switch. My problem is the way part setup software treats the probe trying probe Y starting positive side moving negative. Trying start positive side will move positive rather up across the part towards negative. If I select the positive side with the probe sitting on the opposite it moves across to the other side of the part as it should.

Just to be perfectly clear as to what, where, and how I can resolve this.
I'll move the switch back to the logically positive position (closest to the X table). I'll make sure all the homing directions are positive, meaning X homes right, Y homes towards the front closest to the X table, and Z homes up. The auto homing directions set in the wizard will all be +(M92) and a direction reversal will be N. Is this correct and the part setup should be normal? Thank for all you do helping folks like me.

[cnckeith]

Holy cow. That's way I had it to start with! My homing switch was mounted near the X table homing switch. My problem is the way part setup software treats the probe trying probe Y starting positive side moving negative. Trying start positive side will move positive rather up across the part towards negative. If I select the positive side with the probe sitting on the opposite it moves across to the other side of the part as it should.

Just to be perfectly clear as to what, where, and how I can resolve this.
I'll move the switch back to the logically positive position (closest to the X table). I'll make sure all the homing directions are positive, meaning X homes right, Y homes towards the front closest to the X table, and Z homes up. The auto homing directions set in the wizard will all be +(M92) and a direction reversal will be N. Is this correct and the part setup should be normal? Thank for all you do helping folks like me.

please post some photos and a drawing or draw on top of the image(s) of your machine switches motors etc.. there are so many combinations that are supported , a photo is worth a thousand words.