Hi, all

All things related to the Centroid Acorn CNC Controller

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assortlist
Posts: 1
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Hi, all

Post by assortlist »

Hi, all

Has anyone managed to wire the DYN4 ZRI using only two Acorn inputs?

X-Axis ZRI to Acorn IN1
Y-Axis ZRI to Acorn IN1
Z-Axis ZRI to Acorn IN1

X-home switch, Y-home switch, Z-home switch, wired in series to Acorn IN2

Normally Open switch, Normally closed switch ?

Acorn Wizard settings ?

I understand the homing file needs to be modified, anyone have the syntax for this ?

Thanks
tblough
Posts: 1697
Joined: Tue Mar 22, 2016 10:03 am
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CNC Control System Serial Number: 100505
100327
102696
103432
7804732B977B-0624192192
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Contact:

Re: Hi, all

Post by tblough »

Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
martyscncgarage
Posts: 8976
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Location: Mesa, AZ

Re: Hi, all

Post by martyscncgarage »

assortlist wrote: Sat Aug 14, 2021 3:26 am Hi, all

Has anyone managed to wire the DYN4 ZRI using only two Acorn inputs?

X-Axis ZRI to Acorn IN1
Y-Axis ZRI to Acorn IN1
Z-Axis ZRI to Acorn IN1

X-home switch, Y-home switch, Z-home switch, wired in series to Acorn IN2

Normally Open switch, Normally closed switch ?

Acorn Wizard settings ? Los Angeles buy trucks

I understand the homing file needs to be modified, anyone have the syntax for this ?

Thanks
More details about your build please.
viewtopic.php?f=60&t=1043

If you are looking for accurate homing, then each ZRI will need its own input.

Marty
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
Scotty
Posts: 5
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Re: Hi, all

Post by Scotty »

Why couldn't all of the ZRI's be or'd together into one input? Just like the home switches all ganged together. Each axis backs off from home following the home command, correct? This allows the next axis to use both common inputs, home switch and the ZRI marker.
martyscncgarage
Posts: 8976
Joined: Tue Mar 28, 2017 12:01 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: Yes
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MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: Yes
CPU10 or CPU7: Yes
CNC Control System Serial Number: none
Location: Mesa, AZ

Re: Hi, all

Post by martyscncgarage »

Scotty wrote: Sun Oct 10, 2021 5:20 pm Why couldn't all of the ZRI's be or'd together into one input? Just like the home switches all ganged together. Each axis backs off from home following the home command, correct? This allows the next axis to use both common inputs, home switch and the ZRI marker.

To do it right, you use a mechanical switch, to roughly home, and then have the control hunt for the Zero Reference Input for each axis to home accurately.
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
Scotty
Posts: 5
Joined: Mon Jul 12, 2021 7:25 pm
Acorn CNC Controller: Yes
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MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hi, all

Post by Scotty »

Agreed. If the home commands are done correctly, all axis ZRI outputs from the DYN4 can be or'd together into one Acorn input. Correct?
tblough
Posts: 1697
Joined: Tue Mar 22, 2016 10:03 am
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MPU11 & GPIO4D -w/ 3rd Party Drives: Yes
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: 100505
100327
102696
103432
7804732B977B-0624192192
Location: Boston, MA
Contact:

Re: Hi, all

Post by tblough »

You can't group the ZRI because the control moves to the limit switch, backs off, and stops on the ZRI signal. That leaves the ZRI on when that axis completes the home routine.
Cheers,

Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
Scotty
Posts: 5
Joined: Mon Jul 12, 2021 7:25 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hi, all

Post by Scotty »

Thanks for the reply!

Doesn't ZRI go away when the drive backs off? If there's a chance that the particular axis may still exert ZRI, then back off a predetermined amount that does not exert ZRI.
Scotty
Posts: 5
Joined: Mon Jul 12, 2021 7:25 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
MPU11 & GPIO4D -w/ 3rd Party Drives: No
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No
CNC Control System Serial Number: none

Re: Hi, all

Post by Scotty »

I guess I should clarify. Could the home routine set home on a particular axis then back off prior to doing the next axis home then repeat. After X y and z home (and back off), the last command would be to home all to the previously known home locations.

Could this work?

My concern is using up the few remaining Acorn inputs, which would mean dropping the 2 inputs I would prefer to save for probing.
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