Re: [Emc-users] Stg 1 homing

2008-10-26 Thread Dave Engvall
On Oct 26, 2008, at 6:20 AM, Maximilian wrote: > > Hey Chris, Hey Dave, > >>> When you home, do you do the axes all at the same time, or one at a >>> time? I know the STG (the card itself) has some limitations when >>> searching for index on more than one axis at a time. > > The stg1 card can on

Re: [Emc-users] Stg 1 homing

2008-10-26 Thread Maximilian
Hey Chris, Hey Dave, >> When you home, do you do the axes all at the same time, or one at a >> time? I know the STG (the card itself) has some limitations when >> searching for index on more than one axis at a time. The stg1 card can only detect the index pulse on two axes which are selectable

Re: [Emc-users] Stg 1 homing

2008-10-25 Thread Dave Engvall
On Oct 25, 2008, at 9:24 PM, Jon Elson wrote: > >> On Sat, Oct 25, 2008 at 09:20:38AM -0700, Dave Engvall wrote: >> >>> I'm not at all certain that rehome works ( homing a second or more >>> time after bring up emc). I ended up 0.1" off one time. >>> > If it was EXACTLY 0.1000" off, then it sound

Re: [Emc-users] Stg 1 homing

2008-10-25 Thread Jon Elson
> On Sat, Oct 25, 2008 at 09:20:38AM -0700, Dave Engvall wrote: > >> I'm not at all certain that rehome works ( homing a second or more >> time after bring up emc). I ended up 0.1" off one time. >> If it was EXACTLY 0.1000" off, then it sounds like homing to the wrong turn of the screw

Re: [Emc-users] Stg 1 homing

2008-10-25 Thread Dave Engvall
Ah! I kick them loose one after the other so all are in the homing process at once. Dave On Oct 25, 2008, at 10:20 AM, Chris Radek wrote: > On Sat, Oct 25, 2008 at 09:20:38AM -0700, Dave Engvall wrote: >> >> I'm not at all certain that rehome works ( homing a second or more >> time after bring

Re: [Emc-users] Stg 1 homing

2008-10-25 Thread Chris Radek
On Sat, Oct 25, 2008 at 09:20:38AM -0700, Dave Engvall wrote: > > I'm not at all certain that rehome works ( homing a second or more > time after bring up emc). I ended up 0.1" off one time. That's troubling. I think you still have a problem. When you home, do you do the axes all at the same t

Re: [Emc-users] Stg 1 homing

2008-10-25 Thread Dave Engvall
Hi, again massive snip! After some fiddling around as far as I can tell homing with limit switch and index does work with a STG 1 card. I can stick a .500 dowel in a .500 drill bushing every time. I'm not at all certain that rehome works ( homing a second or more time after bring up emc). I e

Re: [Emc-users] Stg 1 homing

2008-10-23 Thread Dave Engvall
On Oct 23, 2008, at 9:48 AM, John Kasunich wrote: > Kirk Wallace wrote: >> On Thu, 2008-10-23 at 07:45 -0700, Dave Engvall wrote: >> ... snip >>> Thanks for the confirmation although that wasn't the news I wanted. >>> I would like to be able to emulate the X function in lstg which >>> outputs the

Re: [Emc-users] Stg 1 homing

2008-10-23 Thread John Kasunich
Kirk Wallace wrote: > On Thu, 2008-10-23 at 07:45 -0700, Dave Engvall wrote: > ... snip >> Thanks for the confirmation although that wasn't the news I wanted. >> I would like to be able to emulate the X function in lstg which >> outputs the number of encoder counts between >> index pulses. >> >>

Re: [Emc-users] Stg 1 homing

2008-10-23 Thread Kirk Wallace
On Thu, 2008-10-23 at 07:45 -0700, Dave Engvall wrote: ... snip > Thanks for the confirmation although that wasn't the news I wanted. > I would like to be able to emulate the X function in lstg which > outputs the number of encoder counts between > index pulses. > > Dave ... snip Just a shot in

Re: [Emc-users] Stg 1 homing

2008-10-23 Thread Dave Engvall
On Oct 23, 2008, at 5:28 AM, Jeff Epler wrote: > On Wed, Oct 22, 2008 at 08:10:26PM -0700, Dave Engvall wrote: >> BTW - it appears that the hal stg driver doesn't have an index >> output or am I again missing something. > > If you mean a HAL pin which allows you to continuously monitor the

Re: [Emc-users] Stg 1 homing

2008-10-23 Thread Jeff Epler
On Wed, Oct 22, 2008 at 08:10:26PM -0700, Dave Engvall wrote: > BTW - it appears that the hal stg driver doesn't have an index > output or am I again missing something. If you mean a HAL pin which allows you to continuously monitor the state of the physical index input, I believe you are r

Re: [Emc-users] Stg 1 homing

2008-10-22 Thread Dave Engvall
< snip everything and start over> I was going to just pick on Ray but I think I will dump on the whole list. In summary: this started out as inconsistencies in the homing of X (something like .03) the lstg diagnostic/exerciser from stg gives interesting results. X axis 2500 cpr encoder on b

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread Dave Engvall
OTECTED]> To: "Enhanced Machine Controller (EMC)" [EMAIL PROTECTED]> Sent: Monday, October 20, 2008 6:04 PM Subject: Re: [Emc-users] Stg 1 homing Indeed, I do not see the index-enable go low but that might be how my trace is set up. Will repeat the test and post to imagebin. Thanks

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread Dave Engvall
--- Original Message - > From: "Dave Engvall" <[EMAIL PROTECTED]> > To: "Enhanced Machine Controller (EMC)" [EMAIL PROTECTED]> > Sent: Monday, October 20, 2008 6:04 PM > Subject: Re: [Emc-users] Stg 1 homing > > >> >> Indeed, I do not s

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread Dave Engvall
K there. Dave > > - Original Message - > From: "Dave Engvall" <[EMAIL PROTECTED]> > To: "Enhanced Machine Controller (EMC)" [EMAIL PROTECTED]> > Sent: Monday, October 20, 2008 6:04 PM > Subject: Re: [Emc-users] Stg 1 homing > > >>

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread Alex Joni
EMC)" Sent: Monday, October 20, 2008 6:04 PM Subject: Re: [Emc-users] Stg 1 homing > > Indeed, I do not see the index-enable go low but that might be how my > trace is set up. > Will repeat the test and post to image

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread Dave Engvall
On Oct 20, 2008, at 7:45 AM, John Kasunich wrote: > Kenneth Lerman wrote: >> Hi Dave, >> >> I'm sure someone will correct me if I'm wrong; so here goes. >> >> The way index homing works is that after the homing switch >> actuation is >> detected, the next index pulse sets the home position. If,

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread John Kasunich
Dave Engvall wrote: > Hi all, > > Finally found a 'roundtoit'. > > As a quick test of homing repeatability I mounted a piece of 6061- > T6 in the vise, wrote a small program to > move from homing position to the workpiece and then drill a 1/2" hole > using a 0.500 carbide endmill. > > Hole

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread John Kasunich
Kenneth Lerman wrote: > Hi Dave, > > I'm sure someone will correct me if I'm wrong; so here goes. > > The way index homing works is that after the homing switch actuation is > detected, the next index pulse sets the home position. If, by bad luck, > the edge of the index pulse is right at the s

Re: [Emc-users] Stg 1 homing

2008-10-20 Thread Kenneth Lerman
Hi Dave, I'm sure someone will correct me if I'm wrong; so here goes. The way index homing works is that after the homing switch actuation is detected, the next index pulse sets the home position. If, by bad luck, the edge of the index pulse is right at the switch edge, a little jitter might

[Emc-users] Stg 1 homing

2008-10-19 Thread Dave Engvall
Hi all, Finally found a 'roundtoit'. As a quick test of homing repeatability I mounted a piece of 6061- T6 in the vise, wrote a small program to move from homing position to the workpiece and then drill a 1/2" hole using a 0.500 carbide endmill. Hole 1 was drilled repeatably after a shut d