HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual
Page 142
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–
Traverse range 3
Activated by PLC: M2817 = 1, M2816 = 0
MP912.0
Software limit switch X+
MP912.1
Software limit switch Y+
MP912.2
Software limit switch Z+
MP912.3
Software limit switch 4+
MP912.4
Software limit switch 5+
MP922.0
Software limit switch X–
MP922.1
Software limit switch Y–
MP922.2
Software limit switch Z–
MP922.3
Software limit switch 4–
MP922.4
Software limit switch 5–
MP7490 is used to select whether one or three traverse ranges can be defined with the MOD
function. MP7490 is also used to select whether the datum applies for all traverse ranges or
whether a separate datum can be set for each traverse range (see table below).
MP7490
Number of traverse ranges and datum points
Entry: 0 to 3
Entry
Number of
traverse ranges
Number of
datum points
0
1
3
1
3
3
2
1
1
3
3
1
Markers M2816 and M2817 are used to define the traverse range and/or datum point.
M2816
M2817
Traverse range/datum
0
0
Range 1
1
0
Range 2
0
1
Range 3
The change-over to the selected traverse range must be activated by the strobe-marker M2824 by
the PLC. This strobe-marker is reset by the NC after the change-over has been carried out.