AcornSix - Zri Homing with linear scales
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Re: AcornSix - Zri Homing with linear scales
Those variables will only change when the encoder is sitting on the index mark. You will need to check the variable when the asterisk is showing on the PID screen.
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.
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.
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Re: AcornSix - Zri Homing with linear scales
Hi Tom,
Is that really true? the lathe Operation manual says, that These variable will contain the number of counts of the last index pulse.
Michael
Is that really true? the lathe Operation manual says, that These variable will contain the number of counts of the last index pulse.
Michael
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Re: AcornSix - Zri Homing with linear scales
no idea ?
i saw, that in the latest manual for PLC programming these variables are not listet. Are they kind of new and is there maybe a bug ?
Michael
i saw, that in the latest manual for PLC programming these variables are not listet. Are they kind of new and is there maybe a bug ?
Michael
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Re: AcornSix - Zri Homing with linear scales
Tom was probably thinking you meant #23401-#23408.
Just out of curiosity, do #23401 and #23402 change state on your system, corresponding to whether or not the asterisk is showing?
Yes, I think #25101-#25108 are relatively new. Presumably they were added to avoid the awkward timing issues you get when you try to use #23401-#23408. Perhaps the new variables have not been fully implemented on Acorn.
Just out of curiosity, do #23401 and #23402 change state on your system, corresponding to whether or not the asterisk is showing?
Yes, I think #25101-#25108 are relatively new. Presumably they were added to avoid the awkward timing issues you get when you try to use #23401-#23408. Perhaps the new variables have not been fully implemented on Acorn.
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Re: AcornSix - Zri Homing with linear scales
Just one point I'm sure you are aware of. The X-axis will not have an index pulse. The index pulse will be on whatever axis the SCALE is attached to.
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.
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.
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Re: AcornSix - Zri Homing with linear scales
cncsnw wrote: ↑Thu Apr 11, 2024 1:49 pm Tom was probably thinking you meant #23401-#23408.
Just out of curiosity, do #23401 and #23402 change state on your system, corresponding to whether or not the asterisk is showing?
Yes, I think #25101-#25108 are relatively new. Presumably they were added to avoid the awkward timing issues you get when you try to use #23401-#23408. Perhaps the new variables have not been fully implemented on Acorn.
Yes, probably He means #23401-#23408
I have to Check, if These variable changes, good idea. But from my understanding it World be really difficult to built a precise Homing macro with it.
Of course i have scales on Z and X Axis and they are configured in the Wizard and the closed loop System works well. To avoid a mistake i checked All of the variables from 25101 - 25108 and they are all -1.
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Re: AcornSix - Zri Homing with linear scales
hi all, i want do give a small update:
the ZRI Homing process is working now ! very happy about it.
but i need to use a workaround. since the RS422 Signal cannot switch an Input and the variable in Acorn is not written from the INdex pulse, i use an little Optocoupler transistor from 5V to 24V to switch an Input on and off when reaching the Index Pulse.
this is working great and i wrote a homing makro and everything is fine now. thank you for your support.
the ZRI Homing process is working now ! very happy about it.
but i need to use a workaround. since the RS422 Signal cannot switch an Input and the variable in Acorn is not written from the INdex pulse, i use an little Optocoupler transistor from 5V to 24V to switch an Input on and off when reaching the Index Pulse.
this is working great and i wrote a homing makro and everything is fine now. thank you for your support.
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Re: AcornSix - Zri Homing with linear scales
Thanks or posting this & the amazon link - I am going down a similar path but with a closed loop stepper motor that has a 3 pole encoder without a drive that supports Zri homing signals - I am looking at the CNC4PC C87 Encoder Index Homing Board to help integrate the Z signal - not sure if you looked at that option or if that board will do what i think it will doRC-Lights wrote: ↑Thu Apr 25, 2024 3:41 am hi all, i want do give a small update:
the ZRI Homing process is working now ! very happy about it.
but i need to use a workaround. since the RS422 Signal cannot switch an Input and the variable in Acorn is not written from the INdex pulse, i use an little Optocoupler transistor from 5V to 24V to switch an Input on and off when reaching the Index Pulse.
this is working great and i wrote a homing makro and everything is fine now. thank you for your support.
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Re: AcornSix - Zri Homing with linear scales
thanks for reporting back
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
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
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Re: AcornSix - Zri Homing with linear scales
https://youtube.com/shorts/wuulF71HwA4? ... 6oRPEjjFni
Here a short Video how accurate the Homing process is now
Here a short Video how accurate the Homing process is now
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