Using a 7i95T for 3 axis + handwheels

  • MikkelRS
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08 Jul 2025 01:57 #331500 by MikkelRS
Using a 7i95T for 3 axis + handwheels was created by MikkelRS
Hello all... I am looking at retrofitting a Prototrak DPMV5 mill, its supposed to have electronic handwheels as well as full CNC mode.
I am making new electronic handwheels- instead of using the 100ppr units you can get cheap, i want to use a 1024ppr encoder and custom made wheels. Bringing me to the main question: Can i use the 7i95T Mesa boards 4,5,6th axis encoder inputs as MPGs? Arguably with real good encoder counts? Or am i limited to using the 8 inputs as MPGs for the normal 100ppr units?
The machine I have is electrically stripped, so imagination is the limitation (okay maybe wallet too).

ps: I have retrofit a VMC and converted a manual lathe to CNC using 360ppr encoders on the handwheels to make a similar manual/cnc mode. Sometimes it misses counts when i spin fast using a 7i76e MPG inputs.

Thanks!
 

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  • tommylight
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08 Jul 2025 02:20 #331501 by tommylight
Replied by tommylight on topic Using a 7i95T for 3 axis + handwheels

Can i use the 7i95T Mesa boards 4,5,6th axis encoder inputs as MPGs?

Most probably yes.

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08 Jul 2025 02:43 #331502 by PCW
Replied by PCW on topic Using a 7i95T for 3 axis + handwheels
Yes, you can use spare encoder inputs as MPG interfaces.

Note that with high resolution encoders, you lose the 1 count
per detent feature of 100 PPR MPGs.

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