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Invert the enable pin in StepConf.
You can edit the existing config, click on the right side where you have chosen that pin.

Sorry, failed to sort out the links carrying on into the text.

Gates Belt Tension Calculator
Gates 'phone Frequency App

So from the type of belt, length, number of teeth on the pulley, motor speed and power etc, Gates recommend tensioning to a twang frequency between 39-41Hz.
At this tension, the thing sings pretty loud with the covers off, but is far less sensitive to oscillations. Have P of 0.45, and I increased to 0.015 
With output scale at 4500.
Get
cmd   actual
  300   400
  400   420
  500   500
  600   600
  700   700
1000  1000
1500   1400
2000   1900
2500   2400
3000   2800
3500   3300

Have also now looked at the motor speed with zero volts to the VFD and its 250 (Hurco book says 150, but for now its in the ball park).
The rest of the low end volts looks like this.


 

Hallo, ich habe Die gleiche Maschine wie Du gekauft. wie weit bist Du mit Deinem Umbau? Welche Servos hast Du schlussendlich verbaut? Woher kommst Du?
Viele Grüße  Markus vom Bodensee 88636

Hello,
 have a problem with my LinuxCNC. I run the "LinuxCNC Stepper" I complete my setup and I test each axis separately, it works very well, Once I finish the configuration and I run the shortcut created on the desktop, I can no longer control my axes. When I launch the shortened engine is released, as if I hit the power

Someone has already experienced this problem?

2.6.32-122-rtai

Thank you very much, Hakan!

I'll read the linked document, but your Explanation was perfectly understandable for a starter!

Cheers,
Matthias

dcConf is a setting some drives, typically servo and stepper motor drives, needs to synchronize the motion between them.
The choices are no synchronization (free run - often not accepted by drives), synchronization by precise time (DC - Distributed clocks) or synchronization by event (SM-synchronization).
What the drive accepts are in the ESI file for the drive and is set by a number in the assignActivate field. Check here for a lot of useful info on EtherCAT and a box for Synchronization www.ethercat.org/download/documents/Ethe..._Protocol_Poster.pdf
The sync0Cycle specifies the frequency of the DC clock cycle, or rather the period length. "*1" means 1 x applicationTime period, so often 1 ms. But different values can be given.
sync0Shift says exactly at which point inside this 1 ms the sync event takes place. 

watchdog is usually not needed, ethercat has a default 100 ms watchdog setting. Not sure what happens when the watchdog triggers.
It seems some drives needs this set specifically, such as the Stepperonline A6 servo drive.
The intervals are 40 nsec long, so the setting of intervals=2498 divider=1000 one can see ends up at 2498*40*1000 nsec = 99.92 msecs.
infosys.beckhoff.com/english.php?content...stem/1072459275.html