home switches wired in series

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trottrr50
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home switches wired in series

Post by trottrr50 »

I currently have a harbor freight x2 mill running mach 3 with a gecko g540 driver. I have the home switches for x,y,z connected in series off of input1 on the gecko drive. Can I do the same thing with the centroid acorn board leaving the home switches hooked up to the gecko drive? Would it also work hooking the same arrangement to input 1 on the acorn board?

After trying the acorn out on the gecko drive I am in the process of doing a cnc conversion on a g0704 mill. Can I use the same wiring of the home switches on input1 of the acorn board?
Steve

In Richmond, Virginia
cnckeith
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Re: home switches wired in series

Post by cnckeith »

I like to wire the G540 to the Acorn board according to the "drive only" Acorn to G540 schematic with a modification.
I put three home switches (X,Y,Z) in series and connect them to input 1, use the wizard to set input 1 to "home_all"
this way the machine will home each axis using only one input freeing up two inputs for other uses.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
trottrr50
Posts: 18
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Re: home switches wired in series

Post by trottrr50 »

When hooking the acorn up in this fashion do all the unused inputs and outputs need to be designated as not used?
Steve

In Richmond, Virginia
cnckeith
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Re: home switches wired in series

Post by cnckeith »

when you select the "drive only" button in the Wizard it auto configures all the inputs and output for you.. try and and check it out .
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
trottrr50
Posts: 18
Joined: Fri Jan 05, 2018 11:59 am
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Re: home switches wired in series

Post by trottrr50 »

I did try it but it does not auto configure for all three axes home switches on input 1. It auto configures for the x,y,z axes home switches on inputs 1,2, and 3. I will try again tomorrow morning after I fix a wirining error that I found this afternoon.
Steve

In Richmond, Virginia
cnckeith
Posts: 7166
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Re: home switches wired in series

Post by cnckeith »

yes,
"home_all" not the g540 stock drive only configuration..
select "home_all" for input 1 after you select the drive only radio button..
and then unused (if that is the case) for input 2,3,4.
Need support? READ THIS POST first. http://centroidcncforum.com/viewtopic.php?f=60&t=1043
All Acorn Documentation is located here: viewtopic.php?f=60&t=3397
Answers to common questions: viewforum.php?f=63
and here viewforum.php?f=61
Gear we use but don't sell. https://www.centroidcnc.com/centroid_di ... _gear.html
ScotY
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Re: home switches wired in series

Post by ScotY »

Can you wire limit switches in series like this is you’re not using a G540?
diycncscott

Re: home switches wired in series

Post by diycncscott »

Yes. Just select an input as "HomeAll"
mikes
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Re: home switches wired in series

Post by mikes »

I am sorry if this is documented somewhere, I have been reading the CNC11 doc, but have yet to read anything about this. Could you point me in the right direction?

My question: To use a single input for homing all three (or more) axis, I assume requires backing off each axis after it's homing switch is tripped. Does this happen automatically in the "home_all" configuration? How does the back-off distance get set?
diycncscott

Re: home switches wired in series

Post by diycncscott »

HomeAll is selected as an input in the Wizard and then Home and then "Home To Switch" must be selected in the Axis Configuration section of the Wizard
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