Re: [Emc-users] Servo to go problem

[Ray H. <re...@up...>]

Hi Jim

I'll try a couple of your questions.  What kind of feedback do you want 
from the tachs.  They put out a voltage that is proportional to speed 
and are often used by servo drive amps to compare commanded velocity 
with actual.  The EMC really does not have much for reading an analog 
input from the STG but I suppose that someone here could work up 
something like a spindle speed readout using one.

You can use the coordinate systems g54-g59.3 to set any place in your 
work envelope to zero.  I'd use a little script that is available these 
days with the tkemc graphical interface that helps you set these.  It 
shows up under the scripts menu as "Set_Coordinates.  If you don't have 
it with your distribution, we may be able to upgrade just the display 
parts of your system.

Ray


Jim James wrote:

>
> Hello,
> I have a Servo to go card running on one of the earlier bdi distros. I 
> think it is 2.18. I cannot get the card to spit out a voltage. I tried 
> the diag program "lstg" and the voltage out and in worked fine. I have 
> the base address set to 200. I am not sure what I am doing wrong, 
> could someone send me a copy of their ini file or any other relevant 
> files that have this type of configuration setup successfully? Also, I 
> would like to use tachogenerators as a type of feedback. Is this 
> possible? While I am at it, is there a way to set the zero out the 
> counters on the gui without sending the machine to the home position?
> Thanks,
> Jim