P375 card with 3 stepper - MPOS and DPOS in error
Even with open loop stepper, the P375 has an encoder counter that counts the pulses and sends them back to the controller so that we can do registration. The feedback is in pulse counts but DPOS is in counts x 256.
Therefore it is necessary to set ENCODER_RATIO(256, 1) to get the MPOS in the same counts as the DPOS.
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