Delta D25886 User Manual download pdf (Page 100)

4. Motion Control Instructions

DVP-MC operating manual 4-59

<1> When master axis is in relative mode, master position in cam curve = (master

position 0 + master offset 0) / master scaling 1 = 0.

<2> From cam curve, slave position is 0 when master position is 0. Calculation method: f

(0) = 0.

<3> When slave axis is in relative mode, slave position= 0* slave scaling 1 = 0

<4> When slave axis is in relative mode as well as any start-up mode, its actual position

at point B is 227 and the corresponding position in the cam curve is 0. And so the

coordinate of the meshing point B is (144, 227). When master axis moves, following

master axis, slave axis starts to move from point B according to C2 curve.

6. Explanation of relation between scaling and offset

The same formula reflects the relation between scaling and offset as below.

Slave position = f [(master position + master offset)/ master scaling]* slave scaling + slave offset

When the axis is in absolute mode, Master Offset or Slave Offset is valid but must not be negative

value; when the axis is in relative mode, offset parameter is invalid. The scaling parameter is not

affected by the absolute/ relative mode of master and slave axis.

 Master scaling =1, slave scaling = 1, master offset = 0, slave offset = 0

180

360

Slave Position

Master Positio

360

Suppose cam is planned as above figure, master and slave scaling are both 1, offsets are 0,

the cam curve will not make any change.

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Delta D25886 User Manual Page 100