HEIDENHAIN MANUALplus 620 Technical Manual page 633

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Rollover axes

January 2012

Settings in the configuration editor

PhysicalAxis

[Key name of the axis]

shortestDistance

startPosToModulo

showModuloDisp

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.

Selection menu

Always approach target position on the shortest path (<= 180°)

Approach target position without passing over zero

No value, parameter optional (= off)

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.

6.3 Configuration of Axes