Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread andy pugh
On 26 October 2016 at 23:54, Gene Heskett wrote: >> LinuxCNC knows how to back off the switch if it is already on it. > > If you have individual inputs from each switch. But when shared, it > hasn't a clue which axis is "on". Yes, some things are just inherently

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread Gene Heskett
On Wednesday 26 October 2016 14:31:22 andy pugh wrote: > On 26 October 2016 at 19:04, Jon Elson wrote: > > Yes, this is why having the home switch much closer to the > > limit is best. > > Near the middle might be best, but it needs to be off for half the > travel and on

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread Stuart Stevenson
Gentlemen, Put the home switch wherever you want it OR wherever is convenient. You can use the +-sign in the ini file to determine which direction to seek and search for the home switch and index. You can then offset the home position to wherever you want it AND you can put +- in the axis limits

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread Kirk Wallace
On 10/26/2016 11:31 AM, andy pugh wrote: > On 26 October 2016 at 19:04, Jon Elson wrote: >> Yes, this is why having the home switch much closer to the >> limit is best. > > Near the middle might be best, but it needs to be off for half the > travel and on for half the

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread andy pugh
On 26 October 2016 at 19:04, Jon Elson wrote: > Yes, this is why having the home switch much closer to the > limit is best. Near the middle might be best, but it needs to be off for half the travel and on for half the travel. LinuxCNC knows how to back off the switch if

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread Jon Elson
On 10/26/2016 07:11 AM, andy pugh wrote: > On 26 October 2016 at 03:19, Jon Elson wrote: >> Assuming your home switch is 1 inch from the top (max limit) >> and 4 inches from the bottom (min limit), >> and that the HOME_OFFSET is 0, then you should set the soft >> limits

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread Gene Heskett
On Wednesday 26 October 2016 08:11:18 andy pugh wrote: > On 26 October 2016 at 03:19, Jon Elson wrote: > > Assuming your home switch is 1 inch from the top (max limit) > > and 4 inches from the bottom (min limit), > > and that the HOME_OFFSET is 0, then you should set the

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread andy pugh
On 26 October 2016 at 03:19, Jon Elson wrote: > Assuming your home switch is 1 inch from the top (max limit) > and 4 inches from the bottom (min limit), > and that the HOME_OFFSET is 0, then you should set the soft > limits like this : > MIN_LIMIT = -4.0 > MAX_LIMIT = 1.0

Re: [Emc-users] Moving past Home Switch

2016-10-26 Thread andy pugh
On 26 October 2016 at 01:13, Danny Miller wrote: > 2. You can set axis limits at anything. I probably would never set a > negative coord as a limit but maybe that's just me Actually, this is almost normal for the Z axis. In fact my CAM package assumes that G53 Z0 is "tool

Re: [Emc-users] Moving past Home Switch

2016-10-25 Thread Jon Elson
On 10/25/2016 06:04 PM, hubert wrote: > Is there any way to move past home position. > > Each of my Axis, X, Y, and Z use three sensors to provide inputs for min > and max limits and Homing. We have the Home switch set about 1 inch > inside the max limit switch. However, We need to raise the Z

Re: [Emc-users] Moving past Home Switch

2016-10-25 Thread Stuart Stevenson
If you would include a link to your ini file it would be much easier to diagnose and answer. On Oct 25, 2016 6:11 PM, "hubert" wrote: > Is there any way to move past home position. > > Each of my Axis, X, Y, and Z use three sensors to provide inputs for min > and max limits and

Re: [Emc-users] Moving past Home Switch

2016-10-25 Thread Danny Miller
There are multiple parameters: 1. You can declare the homing switch to be a coordinate other than 0. e.g. "after we settle on the switch, this axis is offset so this is now +1.25 inches" 2. You can set axis limits at anything. I probably would never set a negative coord as a limit but

[Emc-users] Moving past Home Switch

2016-10-25 Thread Mark Johnsen
Just guessing, but you might have software limits set to 0. That'd be a configuration issue, I'd guess the .ini file or the main *.hal file would have those in it. You should be able to travel past the home switch. On a side note, I have no home switches and will 'manually' home in Axis by

[Emc-users] Moving past Home Switch

2016-10-25 Thread hubert
Is there any way to move past home position. Each of my Axis, X, Y, and Z use three sensors to provide inputs for min and max limits and Homing. We have the Home switch set about 1 inch inside the max limit switch. However, We need to raise the Z axis above the home switch but inside the