HEIDENHAIN TNC 306 Technical Manual - Manual (Page 148)

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TNC 406/TNC 306 3 Servo positioning of the NC-axes 3/97
3.5.4 Standstill monitoring
The monitoring functions when the axes have reached the positioning window. The range in which
the axes may move is defined in MP1110.
As soon as position deviation is greater than the value which is stored in MP1110, the flashing error
message
"Gross positioning error D"
is displayed. The message also appears if, on running-in to a position, an overshoot occurs which is
larger than the value in MP1110 or the axis moves in the opposite direction on beginning a
positioning movement.
MP1110 Standstill monitoring
Entry value: 0.001 to 30 [mm]
3.5.5 Positioning window
The positioning window defines the limits within which the control considers that a position has
been reached. After reaching the position the control starts the execution of the next block.
The size of the positioning window is defined in machine parameter MP1030.
If the value which is entered is too small, the run-in time and therefore the time between one
program block and the next will be lengthened.
If the axes have reached the positioning window after a movement, the markers M2008 to M2011
are set (see section "Axis in position").
MP1030
MP1030.0
Positioning window
Entry value: 0.001 to 2 [mm] or [°]
X axis
MP1030.1 Y axis
MP1030.2 Z axis
MP1030.3 Axis 4
MP1030.4 * Axis 5
* only TNC 406