Possibility of a Retrofit on Alcor 220CNC
- Aciera
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Not sure what you mean with '3 axis module' but the signals from the glass scales may need to be converted from analog to digital signals using Heidenhains 'EXE' modules. Some people have also built their own converters. Or you could also replace the scales of course. Have a look for type plates on the glass scales to be sure.The machine has position feedback through Heidenhain glass scales and a 3 axis module with a single output cable
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- Krulli_Fräser
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In terms of necessary Mesa cards, the description of the 7i97T reads "8 inputs can be used to support up to 4 quadrature MPGs" so that card would take care of up to 5 analog axes, 1 spindle, my 3 handwheels and still have a few inputs and outputs. I would just need another daughter card that has a bunch of i/o pins to control all other function and read the dro scales. That should satisfy all my control needs, or am I missing something?
Does the monitor and keyboard in the control terminal need some different mesa card or can these be connected to the pc? I would like to use at least the heidenhain keyboard, if not also the monitor and that most likely needs some kind of adapting.
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- Aciera
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That is correct.The glass scales are of the type LS 303C and have a sine wave output. To use these scales I would need a converter of some kind to create a square ttl wave for linuxCNC, right?
I would expect the monitor to have a standard input (VGA, DVI, HDMI, ...) but that should be easy enough to verify.Does the monitor and keyboard in the control terminal need some different mesa card or can these be connected to the pc?
The keyboard will likely be more challenging and will very much depend on the electrical interface used to transmit the key press signals. There are components in LinuxCNC to interface matrix keyboards but frankly I'm not very optimistic when it comes to reusing a Heidenhain keyboard.
I'll leave this to the experts to answer.In terms of necessary Mesa cards, the description of the 7i97T reads "8 inputs can be used to support up to 4 quadrature MPGs" so that card would take care of up to 5 analog axes, 1 spindle, my 3 handwheels and still have a few inputs and outputs. I would just need another daughter card that has a bunch of i/o pins to control all other function and read the dro scales. That should satisfy all my control needs, or am I missing something?
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- Krulli_Fräser
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