ESTOP keeps happening

[klick0]

As i'm sure you'll be able to tell, i'm new to LinuxEMC, recently got a Gecko G320 servo driver and was testing it out. Once it gets moving a certain speed the servo stops in its tracks and the interface says ESTOP. There is no feedback so I know it's the software stopping it for some reason, is there a MAX speed set somewhere that would do this?

It used to not do this, then I changed the max speed of the X axis (the servo i'm just playing with) upto like 40, just to see how fast I could get it turning. All my numbers are not setup in proportion to anything, so 40 means about nothing. Regardless after I did this once it gets going i'd estimate 200-300rpm it stops.

I guess I just need to read up on the emc config file...

Thanks in advance,
Ross

[unterhaus]

You are getting a following error. There is feedback in the parallel port driving code, EMC asks for a given velocity and the parallel port isn't able to keep up with it, so the position it reports back is outside the following error tolerance. I believe you need to drop the max velocity until you stop getting following errors. You are hitting the max capability of your computer.

[klick0]

That's interesting, my computer is an old 1.2GHZ athlon, from the thunderbird series. What speed computer do I need to get in order to maximize the speed I get from the parallel port? Is it basically just speed of the puter or is there a special parallel port that I should concentrate on?

I might just buy a cheap 2-3ghz emachine at best buy, you think that would allow my servo to travel faster?

Thanks,
Ross