HEIDENHAIN TNC 306 Technical Manual - Manual (Page 113)

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TNC 406/TNC 306 1 Machine axes 4-13
1.4 Software limit switch
For each of the four axes, three different software limit switch ranges can be defined by machine
parameters (e.g. for pendulum machining).
The input values for the software limit switch are related to the reference point of the encoder. The
momentary software limit switch range is selected by the markers (M2817, M2816) and activated
by the strobe marker (M2824).
The MOD function "Axis-limit" can be used to enter an additional limitation for the actual software
limit switch range within the range of traverse.
MP910/MP920 Software limit switch range 1
MP911/MP921 Software limit switch range 2
MP912/MP922 Software limit switch range 3
Entry range:
Linear axis –30 000.000 to +30 000.000 [mm]
Axis of rotation –30 000.000 to +30 000.000 [°]
Software limit switch range 1
Initial values after switch-on;
Activated by PLC M2817 = 0, M2816 = 0
MP910.0 Software limit switch X+
MP910.1 Software limit switch Y+
MP910.2 Software limit switch Z+
MP910.3 Software limit switch 4+
MP910.4 * Software limit switch 5+
MP920.0 Software limit switch X–
MP920.1 Software limit switch Y–
MP920.2 Software limit switch Z–
MP920.3 Software limit switch 4–
MP920.4 * Software limit switch 5–
Software limit switch range 2
Activated by PLC M2817 = 0, M2816 = 1
MP911.0 Software limit switch X+
MP911.1 Software limit switch Y+
MP911.2 Software limit switch Z+
MP911.3 Software limit switch 4+
MP911.4 * Software limit switch 5+
MP921.0 Software limit switch X–
MP921.1 Software limit switch Y–
MP921.2 Software limit switch Z–
MP921.3 Software limit switch 4–
MP921.4 * Software limit switch 5–
* 0nly TNC 406