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Hypersensing with THCAD - better way to do ohmic sensing
- Creative25
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5 years 10 months ago #193075
by Creative25
Replied by Creative25 on topic Hypersensing with THCAD - better way to do ohmic sensing
Great info.
I downloaded the firmware for the 7i76e from Mesa. There are mani filed.
The info I am missing is the File name of the firmware. I searched this forum but did not find anything. Which file do I need to load onto the Mesa board?
I downloaded the firmware for the 7i76e from Mesa. There are mani filed.
The info I am missing is the File name of the firmware. I searched this forum but did not find anything. Which file do I need to load onto the Mesa board?
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5 years 10 months ago #193077
by rodw
Use the file ending in pl.bit that suits the 7i76e
Replied by rodw on topic Hypersensing with THCAD - better way to do ohmic sensing
Creative25 wrote: Great info.
I downloaded the firmware for the 7i76e from Mesa. There are mani filed.
The info I am missing is the File name of the firmware. I searched this forum but did not find anything. Which file do I need to load onto the Mesa board?
Use the file ending in pl.bit that suits the 7i76e
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- Creative25
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5 years 10 months ago - 5 years 10 months ago #193081
by Creative25
Replied by Creative25 on topic Hypersensing with THCAD - better way to do ohmic sensing
Thanks I somehow do not fully understand.
On the Mesa webpage i downloaded the following file.
7i76e.zip
It contains a folder called Config
Inside there is a folder called hotmot2
This folder does not contain a file ending pl.bit
The closest I can find is
7i76e_7i76x1_Dpl.bit
Is this the file I should flash on my mesa card.
Or has the correct file a new name?
On the Mesa webpage i downloaded the following file.
7i76e.zip
It contains a folder called Config
Inside there is a folder called hotmot2
This folder does not contain a file ending pl.bit
The closest I can find is
7i76e_7i76x1_Dpl.bit
Is this the file I should flash on my mesa card.
Or has the correct file a new name?
Last edit: 5 years 10 months ago by Creative25.
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5 years 10 months ago #193116
by PCW
Replied by PCW on topic Hypersensing with THCAD - better way to do ohmic sensing
That is the file for a 7I76E for plasma with 3 'A' encoder inputs
to support up 3 THCADs
to support up 3 THCADs
The following user(s) said Thank You: rodw
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4 years 5 months ago #243608
by Marçal
Replied by Marçal on topic Hypersensing with THCAD - better way to do ohmic sensing
Hi! I believe this is the proper thread to post this. As I said in previous posts I don't know much from electronics, so, sorry about that in advance. I am trying to implement a ohmic sensing system and a THC in a 3 axis plasma cutter machine. Before wiring the THCADs everything worked fine. In another
thread
I created Peter told me it looks like I have a power problem. However, I don't know how to find it. I draw a scheme. I tried to follow the PlasmaC guide, the forum and the Mesa manuals.
I have attached the wiring scheme from the last part, when everything started to fail, plus the report, the ini and hal files.
I checked the hal code I copied from the plasmaC guide and there are some measurement that I am not sure how to find. They are in bold text:
setp ohmicsense.thcad-0-volt-freq 140200
setp ohmicsense.thcad-max-volt-freq 988300
setp ohmicsense.ohmic-threshold 22.0
setp ohmicsense.ohmic-low 1.0
Can someone help me to find what I am doing wrong, please?
Thank you
I have attached the wiring scheme from the last part, when everything started to fail, plus the report, the ini and hal files.
I checked the hal code I copied from the plasmaC guide and there are some measurement that I am not sure how to find. They are in bold text:
setp ohmicsense.thcad-0-volt-freq 140200
setp ohmicsense.thcad-max-volt-freq 988300
setp ohmicsense.ohmic-threshold 22.0
setp ohmicsense.ohmic-low 1.0
Can someone help me to find what I am doing wrong, please?
Thank you
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4 years 5 months ago #243634
by rodw
Replied by rodw on topic Hypersensing with THCAD - better way to do ohmic sensing
The frequencies come from the sticker on the THCAD x 1000 (convert kHz to Hz)
The voltages thresholds are where the probe signal turns on (at 22 volts) and off (at 1 volt) in your example
You can watch a probing event in halshow (or use the probe test) to see the maximum voltage in your setup on the ohmicsense.ohmic-volts pin.
The ohmic-threshold needs to be a couple of volts below that voltage.
If your frequencies were wrong and the calculated voltage was below the threshold of 22 volts it will never trigger.
The voltages thresholds are where the probe signal turns on (at 22 volts) and off (at 1 volt) in your example
You can watch a probing event in halshow (or use the probe test) to see the maximum voltage in your setup on the ohmicsense.ohmic-volts pin.
The ohmic-threshold needs to be a couple of volts below that voltage.
If your frequencies were wrong and the calculated voltage was below the threshold of 22 volts it will never trigger.
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