January 2012 6.3 Configuration of Axes 633
Rollover axes
Roll-over axes are rotary axes with modulo counting mode that are able to
execute several or any number of revolutions. Example:
A machine with C axis as rotary table.
If you want to configure a rotary axis as rollover axis, you have to insert the
optional configuration object CfgRollOver in the machine configuration for the
respective axis.
With the three machine parameters MP_shortestDistance,
MP_startPosToModulo and MP_showModuloDisp you define the
characteristics of the rollover axis.
Set the parameter MP_shortestDistance = on so that the axis approaches the
target position on the shortest path (<= 180°) if programming is non-
incremental. The nominal and the target value display is always between 0°
and 360°, also with incremental programming.
MP_shortestDistance
Traverse path of rotary axis with modulo counting mode
Available from NCK software version: 597 110-01.
Format: Selection menu
Selection: on
Always approach target position on the shortest path (<= 180°)
off
Approach target position without passing over zero
Default: No value, parameter optional (= off)
Access: LEVEL3
Reaction: RUN
Set the parameter MP_startPosToModulo = on, to move the position of the
rotary axis into the module limits (0...360°) before the beginning of the
positioning block. The MP_startPosToModulo parameter is effective only if
you configure MP_shortestDistance = off.
Settings in the configuration editor MP number
Axes
PhysicalAxis
[Key name of the axis]
CfgRollOver
shortestDistance
startPosToModulo
showModuloDisp
300401
300402
300403
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