Re: [Emc-users] Touch-trigger Probe

2008-12-10 Thread John Thornton
On 9 Dec 2008 at 21:24, [EMAIL PROTECTED] wrote: I am using EMC2 and Ubuntu 6.06 and would like to share my understanding of hooking up a touch-trigger probe with experts on this list. The probe acts as a NC switch and is connected to pin 12 on the parallel port. In the HAL file, I

Re: [Emc-users] Touch-trigger Probe

2008-12-10 Thread Stephen Wille Padnos
John Thornton wrote: [snip] In the HAL file, I add a line: net probe parport.0.pin-12-in = motion.probe-input (or net probe parport.0.pin-12-in-not = motion.probe-input). Not sure which one I should use. A switch will make the in-not True when closed and False when open and the in will be

Re: [Emc-users] Touch-trigger Probe

2008-12-10 Thread John Thornton
On 10 Dec 2008 at 11:19, Stephen Wille Padnos wrote: John Thornton wrote: A switch will make the in-not True when closed and False when open and the in will be False when closed and True when open. That's not necessarily true. Whether the switch is NC or NO makes no difference.

Re: [Emc-users] Touch-trigger Probe

2008-12-10 Thread Stephen Wille Padnos
John Thornton wrote: On 10 Dec 2008 at 11:19, Stephen Wille Padnos wrote: John Thornton wrote: A switch will make the in-not True when closed and False when open and the in will be False when closed and True when open. That's not necessarily true. Whether the switch is NC or NO

[Emc-users] Touch-trigger Probe

2008-12-09 Thread saadp
I am using EMC2 and Ubuntu 6.06 and would like to share my understanding of hooking up a touch-trigger probe with experts on this list. The probe acts as a NC switch and is connected to pin 12 on the parallel port. In the HAL file, I add a line: net probe parport.0.pin-12-in =

Re: [Emc-users] Touch-trigger Probe

2008-12-09 Thread Jeff Epler
In the current version of emc, it's only possible to probe for one of the transitions (G38.2: not touching to touching). In the development version there are additional codes including G38.4 which is indeed indented for detecting when the probe goes from touching to not touching. (There are also