7.1.5 Rotary Axis Parameter Setting Explain


CNC controller's smallest unit is DU, when not combine with machine, it got no distance (μm, mm) concept.

1 DU= feedback unit


A rotary axis sent out 655360 pulse (Multiple by 4) for a round, and this axis pitch is 360000. The 360000 is over range of pitch parameter, but we can divide 360000 by 10 and 655360 also divide by 10 then set pitch as 36000 and encoder as 16384 (65536÷4).


Say if an axis a round sends out 4 magnifications 655360 pauses,  Pitch = 360000 and Encoder 655360 and servo speed adjust "Servo Adj" 200 divide 10, then we can get the Encoder, Pitch setting value.

Encoder = 16384 (because 4 magnifications, thus, need to divide by 4)

Pitch = 36000

Servo Adj = 20


After the setting has been done, use the following examination:

G90 G0 X0

G01 X360 F360 (F = mm/min)

(360 mm) / (360 mm/min) = 1 min

It can verify by X axis from 0 to 360 need 1 minutes.