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Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

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3.6.2 Axes in position<br />

If the axes have reached the defined positioning window (MP1030, see section "Positioning<br />

window") after a movement, the "axis in position" markers are set by the NC. This also happens<br />

after switching on the control voltage.<br />

The markers will be reset by the NC only if the axes leave the positioning window when being<br />

traversed in manual operation or automatic operation. This is also valid when passing over the<br />

reference marks. In the "Electronic handwheel" mode of operation the markers M2008 to M2011 are<br />

reset.<br />

The markers also inform the PLC when an axis should be moved. A positioning block resets the<br />

corresponding in-position marker. This makes it possible to unclamp the axis and close the control<br />

loop.<br />

For contours which can be machined with constant feed rate the "Axis in position" markers are not<br />

set.<br />

Marker Function Set Reset<br />

M2008 X axis in position NC NC<br />

M2009 Y axis in position<br />

M2010 Z axis in position<br />

M2011 4th axis in position<br />

8/95 <strong>TNC</strong> <strong>360</strong> 3 Servo Positioning of the NC Axes 4-75

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