HEIDENHAIN TNC 335 Technical Manual - Manual (Page 343)

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TNC 360 17 Point-to-Point and Straight-Cut Control 8/95
17 Point-to-Point and Straight-Cut Control
The LE 360 logic unit is used as a control for simple machine tools with common drive.
All functions for which two or more axes must be interpolated are inhibited with machine parameter
MP7215, while certain other machine parameters are without function.
MP7215 Contouring control or point-to-point and straight-cut control
Input: 0 to 3
Input value 0:
Contouring control
Input value 1: Point-to-point and straight-cut control
Contouring functions inhibited
Basic rotation inhibited
ISO inhibited
MP 1070 without function
MP 7220 without function
MP 7222 without function
MP 7420 without function
MP 7430 without function
MP 7460 without function
Input value 3: Position display inhibited, otherwise same as input value 1
(only nominal, REF, lag, distance-to-go display possible)
Set Reset
M2040 Control is point-to-point and straight-cut control NC NC
Machines with common drive
On machines with common drive is necessary to set the analog voltages for the axis drives to a
common output through machine parameter MP120 (see Section 1.2.1).
Example for MP120:
Input for all axes: 0
^
= Output 1
X axis MP 120.0 = 0
Y axis MP 120.1 = 0
Z axis MP 120.2 = 0
This means that the analog voltage for the X, Y and Z axis is sent to output 1.
After an axis is positioned, its control loop must be opened through the PLC program and its axis
must be clamped (see Section 3.6.4).