Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
Search
one limit switch or two??
|
Robert Campbell
Thomas,
toggle quoted message
Show quoted text
I like to use one limit sensor on each end of travel for my X and Y axis. This is mostly for safety reasons. On my Y axis, I ended up placing two targets and one sensor. Mach2 knows the direction of travel so you can get buy with one sensor and a second target for the inductive proximity sensor. Bob Campbell Bob@... www.campbelldesigns.com Breakout board THC board sets CNC router plans Stepper Motors ----- Original Message -----
From: "Thomas Powell" <tppjr@...> To: <mach1mach2cnc@...> Sent: Saturday, February 28, 2004 1:25 AM Subject: [mach1mach2cnc] one limit switch or two?? Using Campbell's breakout board what are the advantages and disadvantagesto using one or two limit switches per axis? |
|
Robert Campbell
Thomas,
toggle quoted message
Show quoted text
I use one limit sensor on my Z axis, two on my X axis and one on my Y axis with two targets. Bob Campbell Bob@... www.campbelldesigns.com Breakout board THC board sets CNC router plans Stepper Motors ----- Original Message -----
From: "Thomas Powell" <tppjr@...> To: <mach1mach2cnc@...> Sent: Saturday, February 28, 2004 2:27 PM Subject: Re: [mach1mach2cnc] one limit switch or two?? Bob,will or should I use for my setup? Including limit and home switches. axis. This is mostly for safety reasons.knows the direction of travel so you can get buy with one sensor and a seconddisadvantages to---- Yahoo! Groups LinksService.
|
|
Robert Campbell
Thomas,
toggle quoted message
Show quoted text
I use the same sensor for home and limit. On my CNC router, I very seldom home my machine. I just position the router to where I want my 0,0,0 point to be and do a G92 type command. The limits take care of over travel. Bob Campbell Bob@... www.campbelldesigns.com Breakout board THC board sets CNC router plans Stepper Motors ----- Original Message -----
From: "Thomas Powell" <tppjr@...> To: <mach1mach2cnc@...> Sent: Sunday, February 29, 2004 2:18 AM Subject: Re: [mach1mach2cnc] one limit switch or two?? Thanks Bob. Nothing for Home or do you use the same sensors for limit andhome? axis with two targets.second > target for the inductive proximity sensor. ------------------------------------------------------------------------------ Yahoo! Groups LinksService.
|
|
thomas, there is no advantages to use 2 limit switches i think. mach2 don't
use the limit + or limit - information separatly. The only thing a limit do is Estop mach2, and eventually homing for combined home limit switch strategy (i don't like it). It's better to use a mechanical ramp who will trig the limit switch at the end of each axis limit, and to keep your money for a second switche by axis for referencing. Like this you will get software limits working, and you can have your ramps limit switch set just after this software limits, with hardware power off on them in case your servos or mach2 become made and run away. if you have 1 reference switch by axis, you can reference all your axis at the same time, and you can connect in serial all your limit switches to take only 1 mach2 input. This make a total of 4 input for 3 axis. It's the better setup, not expensive (2 switches per axis, 1 dual ramp for limits and 1 half lenght ramp for reference by axis), save mach2 inputs, and give you a true referencing possibility with setable software limits. this give you too the possibility to put the reference switch in the middle of each axis, this is really a time keeper strategy, because you will not need to go at 0 machine position to reference. This is well explained in the John's manual, but this strategy is not often choosed by beginners certainly because when they see their machine joging with mach2, they forget they could keep a lot of time with a true separate referencing, software limits, and hardware limit switches for urgency power off. Olivier. |
|
Thomas Powell
Bob,
toggle quoted message
Show quoted text
Thanks, but I think what I was really asking is how many total sensors will or should I use for my setup? Including limit and home switches. Thanks again, Thomas Powell ----- Original Message -----
From: Robert Campbell To: mach1mach2cnc@... Sent: Saturday, March 01, 2003 7:12 AM Subject: Re: [mach1mach2cnc] one limit switch or two?? Thomas, I like to use one limit sensor on each end of travel for my X and Y axis. This is mostly for safety reasons. On my Y axis, I ended up placing two targets and one sensor. Mach2 knows the direction of travel so you can get buy with one sensor and a second target for the inductive proximity sensor. Bob Campbell Bob@... www.campbelldesigns.com Breakout board THC board sets CNC router plans Stepper Motors ----- Original Message ----- From: "Thomas Powell" <tppjr@...> To: <mach1mach2cnc@...> Sent: Saturday, February 28, 2004 1:25 AM Subject: [mach1mach2cnc] one limit switch or two?? > Using Campbell's breakout board what are the advantages and disadvantages to > using one or two limit switches per axis? > > I will be using the Automation Direct proximity switches. > > Thanks, > > Thomas Powell > > > > > > > Yahoo! Groups Links > > > > > Yahoo! Groups Sponsor ADVERTISEMENT ------------------------------------------------------------------------------ Yahoo! Groups Links a.. To visit your group on the web, go to: b.. To unsubscribe from this group, send an email to: mach1mach2cnc-unsubscribe@... c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
|
Thomas Powell
Thanks Bob. Nothing for Home or do you use the same sensors for limit and home?
toggle quoted message
Show quoted text
Thomas ----- Original Message -----
From: Robert Campbell To: mach1mach2cnc@... Sent: Saturday, March 01, 2003 2:18 PM Subject: Re: [mach1mach2cnc] one limit switch or two?? Thomas, I use one limit sensor on my Z axis, two on my X axis and one on my Y axis with two targets. Bob Campbell Bob@... www.campbelldesigns.com Breakout board THC board sets CNC router plans Stepper Motors ----- Original Message ----- From: "Thomas Powell" <tppjr@...> To: <mach1mach2cnc@...> Sent: Saturday, February 28, 2004 2:27 PM Subject: Re: [mach1mach2cnc] one limit switch or two?? > Bob, > > Thanks, but I think what I was really asking is how many total sensors will or should I use for my setup? Including limit and home switches. > > Thanks again, > > Thomas Powell > > ----- Original Message ----- > From: Robert Campbell > To: mach1mach2cnc@... > Sent: Saturday, March 01, 2003 7:12 AM > Subject: Re: [mach1mach2cnc] one limit switch or two?? > > > Thomas, > > I like to use one limit sensor on each end of travel for my X and Y axis. > This is mostly for safety reasons. > > On my Y axis, I ended up placing two targets and one sensor. Mach2 knows > the direction of travel so you can get buy with one sensor and a second > target for the inductive proximity sensor. > > Bob Campbell > Bob@... > www.campbelldesigns.com > Breakout board > THC board sets > CNC router plans > Stepper Motors > ----- Original Message ----- > From: "Thomas Powell" <tppjr@...> > To: <mach1mach2cnc@...> > Sent: Saturday, February 28, 2004 1:25 AM > Subject: [mach1mach2cnc] one limit switch or two?? > > > > Using Campbell's breakout board what are the advantages and disadvantages > to > > using one or two limit switches per axis? > > > > I will be using the Automation Direct proximity switches. > > > > Thanks, > > > > Thomas Powell > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > Yahoo! Groups Sponsor > ADVERTISEMENT > > > > > > -------------------------------------------------------------------------- ---- > Yahoo! Groups Links > > a.. To visit your group on the web, go to: > > > b.. To unsubscribe from this group, send an email to: > mach1mach2cnc-unsubscribe@... > > c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > > > > > > > Yahoo! Groups Links > > > > > Yahoo! Groups Sponsor ADVERTISEMENT ------------------------------------------------------------------------------ Yahoo! Groups Links a.. To visit your group on the web, go to: b.. To unsubscribe from this group, send an email to: mach1mach2cnc-unsubscribe@... c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
to navigate to use esc to dismiss