Pos Units/Rev

Default: 1
Range: 1 to 65535

This parameter is available on stepper axes only. It is used with the Steps/Rev parameter to determine the scaling between position units and steps. It is also used with Quad Cnts/Rev to determine the scaling between position units and quadrature counts. Therefore it is used in the following two conversions:

$image\ebx_-686154301.gif$

$image\ebx_1821210426.gif$

Because this parameter is used in both scales, changing its value will change the effective scale between position units and both quadrature counts and steps. For more information on the quadrature scale, see Quad Cnts/Rev. For more information on the step scale, see Steps/Rev.

As this parameter’s name implies, the intended use of this parameter is to enter the number of position units you wish to have in one revolution. This works well in applications where the stepper, quadrature encoder, and position units are all taken from the same axis and there are a whole number of position units per revolution. The following are some possible values:

Position Units	Pos Units/Rev
Degrees	360
Tenths of a degree	3600
Hundredths of a degree	36000
Thousandths of a rev.	1000
Ten-thousandths of a rev.	10000

For a full discussion, including examples, on scaling with stepper modules, see Stepper Scaling.