7i96E + 7i85S + AC Servo - encoder feedback

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6 years 5 months ago #168270 by PCW
I don't think 9 stepgens will fit in a 7I96+7I85S (unless some other feature was dropped)

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6 years 5 months ago - 6 years 5 months ago #168344 by Bouni
Ok, so that means that it is a resource problem but if there were a bigger FPGA on the 7i96 the number would bee correct?

As I'm building a simple CNC mill with just XYZ (maybe a 4th axis later on) my config is:

3 stepgens
7I96 STEP 0 -> X Axis
7I96 STEP 1 -> Y Axis
7I96 STEP 2 -> Z Axis

5 encoders
7I96 ENC HAL ENC 0
7I96 ENC HAL ENC1 (alias of ENC 0) -> Spindle
7I85S ENC 0 HAL ENC 2 -> X Axis
7I85S ENC 1 HAL ENC 3 -> Y Axis
7I85S ENC 2 HAL ENC 4 -> Z Axis

And of course the SmartSerial if I want to use them for more IOs.

The left Stepgen and the Differential Outputs on the 7I85S can be used as normal outputs!?

Is that correct?
Last edit: 6 years 5 months ago by Bouni.

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