MC-Basic:axis.POSITIONEXTROLLOVERMIN

When an axis POSITIONEXTROLLOVERENABLE flag is set (ON), it means the axis PEXT is rotary (i.e., the position coordinates of the axis are periodical). POSITIONEXTROLLOVER defines the period (the length of one revolution in user units) of the axis. POSITIONEXTROLLOVERMIN defines the lower limit coordinate of the revolution.
For example:

POSITIONEXTROLLOVERENABLE = 1

POSITIONEXTROLLOVERMIN = -180

POSITIONEXTROLLOVER = 360

The PEXT of the axis will run between -180 and +180 degrees. If we move by one degree in positive direction from 180 the PEXT value will be -179.

Syntax

<axis name>.PositionExtRolloverMin = <value>
?<axis name>.PositionExtRolloverMin

Type

Double

Range

MinDouble-MaxDouble

Default

-180

Scope

Read/Write, Configuration, Task, Terminal

Limitations

• The POSITIONEXTROLLOVERMIN value may be changed only when the axis is disabled.
• To set the value within a task, the axis must be attached to that task (using the ATTACH command).

Examples

A1.PositionExtRolloverMin = -180

A1. PositionExtRollover = 360

Coordinates are between -180 and 180 degrees

See Also

• ATTACH
• axis.POSITIONROLLOVERENABLE