Re: Angular fourth axis wit BDI-TNG version of EMC

[Ray Henry <rehenry-at-up.net>]

John

I think that the MAX_VELOCITY = 0.2 in this case will mean that you get a 
degree every five seconds.  Is it possible that it was moving but you did not 
see it?

Ray


On Monday 01 July 2002 21:06, you wrote:
> Hello,
>
> I am becoming convinced that EMC and my Sherline CNC rotary table are not
> going to get along.  I have EMC configured for the fourth axis with these
> parameters in the emc.ini file:
>
> TYPE = ANGULAR
> Units = 1.0
> Input_Scale = 80
> Output_Scale = 80.00
> MAX_VELOCITY = 0.2
>
> The axis will not move with these settings and will give following errors.
> If I change the input and output scale to 28800 the axis will move but
> requires you to enter all moves of less than 1 full revolution of the table
> as decimal moves.  For example, a move of 90 degrees would be entered as g1
> a0.25 which will work but is not what I want to do.  The driver is
> currently a Camtronics 5AMP Bipolar driver set for 1/2 step mode.
>
> I have the table working correctly with TurboCNC but I would prefer using
> it with EMC.  Is this a freqmod.o problem in the BDI-THG release?  Should I
> go back to BDI 2.14 and try it with steppermod.o to see if it works better.
> Since steppermod.o does not work with the bDI-TNG and the rtai real time
> stuff I will need to reinstall to go back to BDI 2.14 which is inconvient
> but not impossible.
>
> Thanks
>
> John Guenther
> Sterling, Virginia