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shifts / offsets after some machining time with CSMIO IP-M

Hello this is my problem (posted also on machsupport) but maybe you will be in a better place to help me:

Following the installation of a CSMIO IP-M controller on my cnc (6040), I have shifts in the working origin after a certain machining time (about 1 hour with a lot of circle machining). This offset is in X, Y and Z and is always in the same proportions (about 5mm on all axes, positive offset in X and negative in Y and Z). Despite several attempts to adjust the motors (step/mm, velocity and acceleration) I still have these lags. There are no mechanical hard points on any axis (it worked fine with the old interpcnc controller).
The attempted machining is on a work surface of approximately 400 x 550 and with 25 holes of 22mm diameter and 18mm depth.
I use Mach3, the steppers controllers are DM542 and wiring as your documentation.

What can I check / change?

Hello,

Symptoms indicate incorrectly set edges of the active step signal.
In this situation, the step pulses are slowly lost each time the dir signal changes.

Change the "Step Low Active" setting to the opposite.

Regards,

Wojtek

Uploaded files:
  • 21.png

Thank you Wojtek for your help. Il will try this setup this afternoon.

 

Regards,

jeff

Thank you Wojtek, you make my day! That was that !

 

Best regards,

jeff

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