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Topics - GfactShop

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dspMC/IP Motion Controller / Dspmc Encoders not in sync with mach 3
« on: October 01, 2014, 11:59:35 AM »
We had retrofit a 96' chevalier 63RD made by Falcon. We used the original SEM MTS30 M4 servos driven by the original 10v servo dynamics SDFP01525-17 Amplifier. The encoders are differential and made by the English Encoder CO. they are original to this machine and operate at 5-24v, 1250ppr.
we are also Using a Vital Systems 7761 DSPMC. The Servos are tuned to the drive setup graph with the red and blue lines on top of each other and seem to drive normally and smoothly. the encoders are feeding back info to the DRO's in Mach. However...

The DRO's do not register any movement on the settings page. When running a program the graphic display in the upper right corner does not reflect the actual tool path. It  shows a broken line instead of the solid white line it normally shows when working properly.

Mach also seems to not read the program accurately when running a program. it seems to be skipping blocks of code and/or misreading blocks of code. It follows the general path but no where close to accurately.

The servos run smooth and silent but take time to settle after a movement. occasionally the servos will creep as seen on the DRO's and verified by indicator readings.

Vital Systems support says that their system is working properly and that the conflict is between the working DSPMC and Mach.
The problem seems to be that Mach is not receiving all encoder information, or is misinterpreting it.

It has been suggested that there may be a missing plugin for the 7761, Has anyone experienced or fixed and issue like this???
would it be possible to write a brain to fix this?
 

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