Exceeding travel

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BillB
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Re: Exceeding travel

Post by BillB »

cnckeith wrote: Wed Oct 13, 2021 6:19 pm graph the part before running it, the graph is a true g code backplot and it takes into account travels etc.. and will tell you about any issues before you actually run the job.
I've been graphing the part and I did question if it is correct, here is a screenshot.

I'm getting the exceed error in every part I load from the (C:\cnct\ncfiles) directory as well.
Attachments
20.jpg
cnckeith
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Re: Exceeding travel

Post by cnckeith »

great.. the graph is letting you know that from the WCS position being used by the G code program the G code will not fit inside the work envelope.

Take a photo of your lathe, draw on it where you have the home position defined/switches mounted etc...
and where did you set the WCS G54 X0 and Z0 position?

review page 12.
https://www.centroidcnc.com/centroid_di ... -v4.20.pdf
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
cnckeith
Posts: 3515
Joined: Wed Mar 03, 2010 4:23 pm
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Re: Exceeding travel

Post by cnckeith »

looking at the setttings... unrelated to homing and wcs.. the step per rev setting is below the recommended value of 1600. yours is set to 800.
review this post. viewtopic.php?f=63&t=1801
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
BillB
Posts: 168
Joined: Thu Jul 15, 2021 1:43 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Exceeding travel

Post by BillB »

cnckeith wrote: Thu Oct 14, 2021 2:23 am looking at the setttings... unrelated to homing and wcs.. the step per rev setting is below the recommended value of 1600. yours is set to 800.
review this post. viewtopic.php?f=63&t=1801
The 800 setting is what the guys at Sherline gave me so I'm just following their lead.

Would the step count have any effect on axis movement being less than it should be? On BOTH mill and lathe when I
Enter .001 I get.0008 on DRO or I Enter .001 I get.008 on DRO depending on how I have it set in the parameters
Enter .01 I get .008 on DRO.
Enter .1 I get.08 DRO
This is while jogging in ONLY 1 direction at a time so it's not backlash. Every click = multiplier by 8 every click
I am also consistently seeing the same results when putting a dial indicator on a fixed point on the bed. Let me know if this is a totally separate thing I need to dial in, I just have not fully addressed it yet.
Last edited by BillB on Fri Oct 15, 2021 1:49 am, edited 3 times in total.
BillB
Posts: 168
Joined: Thu Jul 15, 2021 1:43 pm
Acorn CNC Controller: Yes
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MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Exceeding travel

Post by BillB »

cnckeith wrote: Thu Oct 14, 2021 2:19 am great.. the graph is letting you know that from the WCS position being used by the G code program the G code will not fit inside the work envelope.

Take a photo of your lathe, draw on it where you have the home position defined/switches mounted etc...
and where did you set the WCS G54 X0 and Z0 position?

review page 12.
https://www.centroidcnc.com/centroid_di ... -v4.20.pdf
Here is my home location, you can see the switches, my G54. Also a pic of the part in Fusion to see the tool path. The part is really small stock is .375
Attachments
002.jpg
99AA415D-FFA1-4C18-BDDD-C623E9AE5C5B.jpeg
BD93BCE9-E691-4410-80BA-67E845FD7052.jpeg
tblough
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100327
102696
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Re: Exceeding travel

Post by tblough »

Take a photo of the CNC12 screen with the machine in the first photo position, and one with the machine in the second photo position and post them here.

Here's the Centroid document showing how to calibrate your DROs -
Centroid Fine DRO Adjustment.pdf
(459.51 KiB) Downloaded 5 times
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
BillB
Posts: 168
Joined: Thu Jul 15, 2021 1:43 pm
Acorn CNC Controller: Yes
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MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Exceeding travel

Post by BillB »

tblough wrote: Fri Oct 15, 2021 7:53 am Take a photo of the CNC12 screen with the machine in the first photo position, and one with the machine in the second photo position and post them here.

Here's the Centroid document showing how to calibrate your DROs - Centroid Fine DRO Adjustment.pdf
Here you go.
Attachments
CCA8DF44-3ED4-433C-8206-913094CF9D7F.jpeg
D03793C0-8945-450C-8263-57A0A4987B65.jpeg
cnckeith
Posts: 3515
Joined: Wed Mar 03, 2010 4:23 pm
Acorn CNC Controller: Yes
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DC3IOB: Yes
CNC11: Yes
CPU10 or CPU7: Yes
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Contact:

Re: Exceeding travel

Post by cnckeith »

i would

1.) manually jog the machine to "test' the work envelope (software travel limits) all four corners, to make sure it is set correctly.

2.) command the machine to move to the WSC being used in the g code program x0,z0 to verify it is as the proper location.
"G54"
G1 X0 F20
G1 Z0 F20

3.) now graph the gcode. now if you still get travel exceeded message at this point the g code program is trying to move from the zero in step 2 to outside the work envelope in step 1.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
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