Centroid Community CNC Support Forum

Hi,
Ran the machine all day yesterday without a problem. Today I turned it on and all went well until I tried running programs. My circles started to become ovals. I posted my report and a pic. Any ideas what may be causing this? Thanks.

Looks like losing steps or something is loose..

Checked everything mechanically and all is tight. If it is losing steps all of a sudden after 6 months of running fine. Why?

looks like classic drift caused by loose pulley(s) (motor pulley and screw pulley / rack pinion) on Y axis.

or the program is pushing the machine faster than the axis can physically go or somehow now more force is required or what it takes to move the axis.. in that case look for binding and tightness in the axis (check BOTH directions of movement)

Thanks, I think this is the culprit. The set screws are tight but I notice a little jarring motion a couple of times. I will take it apart tomorrow and loctite the couplers to the shaft.

You have a TON of PC/MPU resends. This usually equates to noise in the control or problems with the Ethernet port
You can see these errors by going F7 Utilties, F9 Logs, F1 Errors
You need to find the source of this issue. I don't know what type of machine you have all we can assume is it is a router.
Try turning off the spindle drive, run the program cutting air and then check the logs

An EXCERPT from your logs (these are really bad)
(4) 04-28-2021 16:34:20 944 MPU requested resend # 622
(4) 04-28-2021 16:34:20 946 PC resending # 25113
(4) 04-28-2021 16:34:20 946 PC resending # 25117
(4) 04-28-2021 16:34:20 944 MPU requested resend # 623
(4) 04-28-2021 16:34:20 946 PC resending # 25177
(4) 04-28-2021 16:34:22 944 MPU requested resend # 624
(4) 04-28-2021 16:34:22 946 PC resending # 25224
(4) 04-28-2021 16:34:23 944 MPU requested resend # 625
(4) 04-28-2021 16:34:23 944 MPU requested resend # 626
(4) 04-28-2021 16:34:23 946 PC resending # 25270
(4) 04-28-2021 16:34:23 946 PC resending # 25289
(4) 04-28-2021 16:34:24 944 MPU requested resend # 627
(4) 04-28-2021 16:34:24 946 PC resending # 25348
(4) 04-28-2021 16:34:24 944 MPU requested resend # 628
(4) 04-28-2021 16:34:24 946 PC resending # 25388
(4) 04-28-2021 16:34:26 944 MPU requested resend # 629
(4) 04-28-2021 16:34:26 946 PC resending # 25440
(4) 04-28-2021 16:34:27 944 MPU requested resend # 630
(4) 04-28-2021 16:34:27 946 PC resending # 25491
(4) 04-28-2021 16:34:27 944 MPU requested resend # 631
(4) 04-28-2021 16:34:27 946 PC resending # 25527
(4) 04-28-2021 16:34:28 944 MPU requested resend # 632
(4) 04-28-2021 16:34:28 946 PC resending # 25585
(4) 04-28-2021 16:34:29 944 MPU requested resend # 633
(4) 04-28-2021 16:34:29 944 MPU requested resend # 634
(4) 04-28-2021 16:34:29 946 PC resending # 25636
(4) 04-28-2021 16:34:29 944 MPU requested resend # 635
(4) 04-28-2021 16:34:29 946 PC resending # 25681
(4) 04-28-2021 16:34:29 944 MPU requested resend # 636
(4) 04-28-2021 16:34:30 946 PC resending # 25708
(4) 04-28-2021 16:34:30 944 MPU requested resend # 637
(4) 04-28-2021 16:34:30 946 PC resending # 25739
(4) 04-28-2021 16:34:30 944 MPU requested resend # 638
(4) 04-28-2021 16:34:30 946 PC resending # 25810
(4) 04-28-2021 16:34:31 944 MPU requested resend # 639
(4) 04-28-2021 16:34:32 946 PC resending # 25853
(4) 04-28-2021 16:34:32 944 MPU requested resend # 641
(4) 04-28-2021 16:34:32 946 PC resending # 25893
(4) 04-28-2021 16:34:32 946 PC resending # 25903
(4) 04-28-2021 16:34:33 944 MPU requested resend # 643
(4) 04-28-2021 16:34:33 946 PC resending # 25962
(4) 04-28-2021 16:34:33 946 PC resending # 26016
(4) 04-28-2021 16:34:34 944 MPU requested resend # 644
(4) 04-28-2021 16:34:34 946 PC resending # 26077
(4) 04-28-2021 16:34:35 944 MPU requested resend # 645
(4) 04-28-2021 16:34:35 946 PC resending # 26135
(4) 04-28-2021 16:34:35 944 MPU requested resend # 646
(4) 04-28-2021 16:34:35 946 PC resending # 26149
(4) 04-28-2021 16:34:36 944 MPU requested resend # 647
(4) 04-28-2021 16:34:36 944 MPU requested resend # 648
(4) 04-28-2021 16:34:36 946 PC resending # 26208
(4) 04-28-2021 16:34:36 946 PC resending # 26246
(4) 04-28-2021 16:34:38 944 MPU requested resend # 649
(4) 04-28-2021 16:34:38 946 PC resending # 26258
(4) 04-28-2021 16:34:38 944 MPU requested resend # 650
(4) 04-28-2021 16:34:38 946 PC resending # 26317
(4) 04-28-2021 16:34:38 946 PC resending # 26318
(4) 04-28-2021 16:34:40 944 MPU requested resend # 651
(4) 04-28-2021 16:34:40 946 PC resending # 26372
(4) 04-28-2021 16:34:41 944 MPU requested resend # 652
(4) 04-28-2021 16:34:41 946 PC resending # 26401
(4) 04-28-2021 16:34:41 944 MPU requested resend # 653
(4) 04-28-2021 16:34:41 946 PC resending # 26431
(4) 04-28-2021 16:34:41 944 MPU requested resend # 654
(4) 04-28-2021 16:34:41 946 PC resending # 26504
(4) 04-28-2021 16:34:41 944 MPU requested resend # 655
(4) 04-28-2021 16:34:41 946 PC resending # 26549
(4) 04-28-2021 16:34:42 944 MPU requested resend # 656
(4) 04-28-2021 16:34:42 946 PC resending # 26577
(4) 04-28-2021 16:34:42 944 MPU requested resend # 657
(4) 04-28-2021 16:34:42 946 PC resending # 26616
(4) 04-28-2021 16:34:43 944 MPU requested resend # 658
(4) 04-28-2021 16:34:43 946 PC resending # 26631
(4) 04-28-2021 16:34:44 944 MPU requested resend # 659
(4) 04-28-2021 16:34:44 946 PC resending # 26686
(4) 04-28-2021 16:34:44 944 MPU requested resend # 660
(4) 04-28-2021 16:34:44 946 PC resending # 26693
(4) 04-28-2021 16:34:45 944 MPU requested resend # 661
(4) 04-28-2021 16:34:45 944 MPU requested resend # 662
(4) 04-28-2021 16:34:45 946 PC resending # 26753
(4) 04-28-2021 16:34:46 944 MPU requested resend # 663
(4) 04-28-2021 16:34:46 946 PC resending # 26789
(4) 04-28-2021 16:34:46 944 MPU requested resend # 664
(4) 04-28-2021 16:34:46 946 PC resending # 26809
(4) 04-28-2021 16:34:47 944 MPU requested resend # 665
(4) 04-28-2021 16:34:48 946 PC resending # 26848
(4) 04-28-2021 16:34:49 944 MPU requested resend # 666
(4) 04-28-2021 16:34:49 946 PC resending # 26895
(4) 04-28-2021 16:34:50 944 MPU requested resend # 667
(4) 04-28-2021 16:34:50 946 PC resending # 26924
(4) 04-28-2021 16:34:50 944 MPU requested resend # 668
(4) 04-28-2021 16:34:50 946 PC resending # 26949
(4) 04-28-2021 16:34:51 944 MPU requested resend # 669
(4) 04-28-2021 16:34:51 946 PC resending # 26978
(4) 04-28-2021 16:34:51 944 MPU requested resend # 670
(4) 04-28-2021 16:34:51 946 PC resending # 26999
(4) 04-28-2021 16:34:51 944 MPU requested resend # 671
(4) 04-28-2021 16:34:51 946 PC resending # 27049
(4) 04-28-2021 16:34:52 944 MPU requested resend # 672
(4) 04-28-2021 16:34:52 946 PC resending # 27091
(4) 04-28-2021 16:34:52 944 MPU requested resend # 674
(4) 04-28-2021 16:34:52 946 PC resending # 27130
(4) 04-28-2021 16:34:52 946 PC resending # 27137
(4) 04-28-2021 16:34:53 944 MPU requested resend # 676
(4) 04-28-2021 16:34:53 946 PC resending # 27177
(4) 04-28-2021 16:34:53 946 PC resending # 27196
(4) 04-28-2021 16:34:54 944 MPU requested resend # 677
(4) 04-28-2021 16:34:54 946 PC resending # 27225
(4) 04-28-2021 16:34:54 946 PC resending # 27245
(4) 04-28-2021 16:34:55 944 MPU requested resend # 678
(4) 04-28-2021 16:34:55 946 PC resending # 27306
(4) 04-28-2021 16:34:55 944 MPU requested resend # 679
(4) 04-28-2021 16:34:55 946 PC resending # 27341
(4) 04-28-2021 16:34:56 944 MPU requested resend # 680
(4) 04-28-2021 16:34:56 944 MPU requested resend # 681
(4) 04-28-2021 16:34:56 946 PC resending # 27400
(4) 04-28-2021 16:34:56 946 PC resending # 27454
(4) 04-28-2021 16:34:58 944 MPU requested resend # 682
(4) 04-28-2021 16:34:58 946 PC resending # 27514
(4) 04-28-2021 16:34:59 944 MPU requested resend # 683
(4) 04-28-2021 16:34:59 946 PC resending # 27574
(4) 04-28-2021 16:35:01 944 MPU requested resend # 684
(4) 04-28-2021 16:35:01 946 PC resending # 27625
(4) 04-28-2021 16:35:04 944 MPU requested resend # 685
(4) 04-28-2021 16:35:04 946 PC resending # 27675
(4) 04-28-2021 16:35:04 944 MPU requested resend # 687
(4) 04-28-2021 16:35:04 946 PC resending # 27729
(4) 04-28-2021 16:35:05 946 PC resending # 27741
(4) 04-28-2021 16:35:05 944 MPU requested resend # 688
(4) 04-28-2021 16:35:05 946 PC resending # 27781
(4) 04-28-2021 16:35:07 944 MPU requested resend # 690
(4) 04-28-2021 16:35:07 946 PC resending # 27827
(4) 04-28-2021 16:35:07 946 PC resending # 27858
(4) 04-28-2021 16:35:07 944 MPU requested resend # 691
(4) 04-28-2021 16:35:07 946 PC resending # 27860
(4) 04-28-2021 16:35:08 944 MPU requested resend # 692
(4) 04-28-2021 16:35:08 944 MPU requested resend # 694
(4) 04-28-2021 16:35:08 946 PC resending # 27944
(4) 04-28-2021 16:35:08 944 MPU requested resend # 695
(4) 04-28-2021 16:35:08 946 PC resending # 27991
(4) 04-28-2021 16:35:09 944 MPU requested resend # 696
(4) 04-28-2021 16:35:09 946 PC resending # 28026
(4) 04-28-2021 16:35:11 944 MPU requested resend # 697
(4) 04-28-2021 16:35:11 946 PC resending # 28061
(4) 04-28-2021 16:35:12 944 MPU requested resend # 698
(4) 04-28-2021 16:35:12 946 PC resending # 28113
(4) 04-28-2021 16:35:13 944 MPU requested resend # 699
(4) 04-28-2021 16:35:13 946 PC resending # 28163
(4) 04-28-2021 16:35:13 944 MPU requested resend # 700
(4) 04-28-2021 16:35:13 946 PC resending # 28192
(4) 04-28-2021 16:35:13 944 MPU requested resend # 701
(4) 04-28-2021 16:35:13 944 MPU requested resend # 702
(4) 04-28-2021 16:35:13 946 PC resending # 28231
(4) 04-28-2021 16:35:13 946 PC resending # 28264
(4) 04-28-2021 16:35:14 944 MPU requested resend # 704
(4) 04-28-2021 16:35:14 946 PC resending # 28311
(4) 04-28-2021 16:35:14 946 PC resending # 28330
(4) 04-28-2021 16:35:16 944 MPU requested resend # 705
(4) 04-28-2021 16:35:16 946 PC resending # 28379
(4) 04-28-2021 16:35:16 944 MPU requested resend # 707
(4) 04-28-2021 16:35:16 946 PC resending # 28411
(4) 04-28-2021 16:35:16 946 PC resending # 28423
(4) 04-28-2021 16:35:17 944 MPU requested resend # 708
(4) 04-28-2021 16:35:17 946 PC resending # 28472
(4) 04-28-2021 16:35:18 944 MPU requested resend # 710
(4) 04-28-2021 16:35:18 946 PC resending # 28527
(4) 04-28-2021 16:35:18 946 PC resending # 28533
(4) 04-28-2021 16:35:18 944 MPU requested resend # 712
(4) 04-28-2021 16:35:18 946 PC resending # 28595
(4) 04-28-2021 16:35:19 946 PC resending # 28640
(4) 04-28-2021 16:35:19 944 MPU requested resend # 713
(4) 04-28-2021 16:35:19 946 PC resending # 28684
(4) 04-28-2021 16:35:19 944 MPU requested resend # 714
(4) 04-28-2021 16:35:19 946 PC resending # 28687
(4) 04-28-2021 16:35:19 944 MPU requested resend # 715
(4) 04-28-2021 16:35:19 946 PC resending # 28757
(4) 04-28-2021 16:35:20 944 MPU requested resend # 716
(4) 04-28-2021 16:35:20 944 MPU requested resend # 717
(4) 04-28-2021 16:35:20 946 PC resending # 28813
(4) 04-28-2021 16:35:20 946 PC resending # 28852
(4) 04-28-2021 16:35:21 944 MPU requested resend # 719
(4) 04-28-2021 16:35:21 946 PC resending # 28907
(4) 04-28-2021 16:35:22 944 MPU requested resend # 720
(4) 04-28-2021 16:35:22 946 PC resending # 28949
(4) 04-28-2021 16:35:24 944 MPU requested resend # 721
(4) 04-28-2021 16:35:24 946 PC resending # 29011
(4) 04-28-2021 16:35:24 944 MPU requested resend # 722
(4) 04-28-2021 16:35:24 946 PC resending # 29039
(4) 04-28-2021 16:35:26 944 MPU requested resend # 723
(4) 04-28-2021 16:35:26 946 PC resending # 29080
(4) 04-28-2021 16:35:26 944 MPU requested resend # 724
(4) 04-28-2021 16:35:26 946 PC resending # 29116
(4) 04-28-2021 16:35:26 944 MPU requested resend # 725
(4) 04-28-2021 16:35:26 946 PC resending # 29120
(4) 04-28-2021 16:35:27 944 MPU requested resend # 726
(4) 04-28-2021 16:35:27 946 PC resending # 29156
(4) 04-28-2021 16:35:28 944 MPU requested resend # 728
(4) 04-28-2021 16:35:28 946 PC resending # 29208
(4) 04-28-2021 16:35:28 946 PC resending # 29231
(4) 04-28-2021 16:35:29 944 MPU requested resend # 730
(4) 04-28-2021 16:35:29 946 PC resending # 29294
(4) 04-28-2021 16:35:29 944 MPU requested resend # 731
(4) 04-28-2021 16:35:29 946 PC resending # 29335
(4) 04-28-2021 16:35:30 944 MPU requested resend # 733
(4) 04-28-2021 16:35:30 946 PC resending # 29393
(4) 04-28-2021 16:35:30 946 PC resending # 29438
(4) 04-28-2021 16:35:31 944 MPU requested resend # 735
(4) 04-28-2021 16:35:31 946 PC resending # 29496
(4) 04-28-2021 16:35:31 946 PC resending # 29540
(4) 04-28-2021 16:35:31 944 MPU requested resend # 736
(4) 04-28-2021 16:35:31 944 MPU requested resend # 737
(4) 04-28-2021 16:35:31 946 PC resending # 29588
(4) 04-28-2021 16:35:32 946 PC resending # 29612
(4) 04-28-2021 16:35:32 944 MPU requested resend # 738
(4) 04-28-2021 16:35:32 946 PC resending # 29650
(4) 04-28-2021 16:35:32 944 MPU requested resend # 739
(4) 04-28-2021 16:35:32 946 PC resending # 29684
(4) 04-28-2021 16:35:33 944 MPU requested resend # 740
(4) 04-28-2021 16:35:33 946 PC resending # 29717
(1) 04-28-2021 16:44:41 Creating report...

Hi Marty,
Yes, the machine is a router.
I I did the following:

You need to find the source of this issue. I don't know what type of machine you have all we can assume is it is a router.
Try turning off the spindle drive, run the program cutting air and then check the logs.

It looks like it is outputting resend requests even when the spindle is off.
Could this mean it is the ethernet cable?

are you using a shielded cable?

I am using the cable that came with the acorn card.

Is the ethernet cable routed anywhere near your incoming power, assuming 220v?

When you say the spindle is off, did you unplug the spindle connector with the VFD still powered on and getting a signal from Acorn or did you power off the VFD or disconnect the SPIN FWD wire? You can still get noise with the VFD running without the spindle wire hooked up. Make sense?