Rollover

The Rollover Position is specified in user units in the PLCopen A vendor -and product- independent worldwide association active in Industrial Control and aiming at standardizing PLC file formats based on XML Axis Data dialog.

When this value is non-zero, the axis' position is reset to 0 (zero) when it reaches the rollover position.

Example

• If the rollover position is 360 and the axis is traveling in the positive direction, the axis position counts up until it reaches 360 where it resets to 0 (zero) and then continues counting up from there.
• If the axis is traveling in the negative direction, the axis position counts down until it reaches 0 (zero), where it resets to 360 and then continues counting down from there.
  • See MC_MoveAbsolute for more information of its operation when Rollover Position is nonzero.
• When the Rollover Position is 0 (zero), rollover is not in effect.
  • The axis position continues to count up when traveling in the positive direction and count down when traveling in the negative direction.

See Also