Re: [Emc-developers] Stepper Controller

2007-12-20 Thread Mario .
One very nice point of encoder connected to a stepper motor (the encoder has much high resolution than the motor) is that you can guess the load and load change in the difference between the actual and commanded position. Of course this will be different for different speeds already and will wildly

Re: [Emc-developers] Stepper Controller

2007-12-19 Thread Jeff Epler
In emc2, you would make the HAL driver for your hardware step generator work similar to the 'stepgen' component. It would probably include at least include the following inputs and outputs: .enable .position-cmd OR .frequency-cmd .position-fb .counts and the following parameters:

Re: [Emc-developers] Stepper Controller

2007-12-19 Thread Mario .
rgetting this board for emc, what can be better than the emc > mailing list. > > regards, > > Anton B. > www.vitalsystem.com > > > > > > - Original Message > From: Mario. <[EMAIL PROTECTED]> > To: EMC developers > > Sent: Wednesday,

Re: [Emc-developers] Stepper Controller

2007-12-19 Thread Anton Buzinski
. regards, Anton B. www.vitalsystem.com - Original Message From: Mario. <[EMAIL PROTECTED]> To: EMC developers Sent: Wednesday, December 19, 2007 12:21:52 PM Subject: Re: [Emc-developers] Stepper Controller It would be nice if you also implemented a callibration table,

Re: [Emc-developers] Stepper Controller

2007-12-19 Thread Mario .
; potential beta testers. > > thank you > Anton > > > > > > > > - Original Message > From: Mario. <[EMAIL PROTECTED]> > To: EMC developers > Sent: Wednesday, December 19, 2007 11:45:29 AM > Subject: Re: [Emc-developers] Stepper Co

Re: [Emc-developers] Stepper Controller

2007-12-19 Thread Anton Buzinski
Sent: Wednesday, December 19, 2007 11:45:29 AM Subject: Re: [Emc-developers] Stepper Controller Currently the step resolution and encoder resolution are independent (but stepper use with encoder is not that used much). When you are going to make the board, could you please post the prici

Re: [Emc-developers] Stepper Controller

2007-12-19 Thread Mario .
Currently the step resolution and encoder resolution are independent (but stepper use with encoder is not that used much). When you are going to make the board, could you please post the pricing and availability too? The other guy who made similar board for PCI (USB is useless due to unpredictable

[Emc-developers] Stepper Controller

2007-12-19 Thread Anton Buzinski
hello EMC team, we are working on a stepper controller board in pci and usb format that will provide high step rates (upto 5mhz or so). we are trying to figure out how the driver might work. could you tell us what api or global variables we can use to findout the axis command position for the