HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 143)

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TNC 407/TNC 415/TNC 425 1 Machine axes 01.98
Marker Function Set Reset
M2824 Activation of the selected traverse range PLC NC
(M2816/M2817)
If one of the software limit switches is reached, the error message "LIMIT SWITCH ..." appears and
the appropriate marker (M2624 to M2633) is set.
Marker Function Set Reset
M2624 Limit switch X+ NC NC
M2625 Limit switch X–
M2626 Limit switch Y+
M2627 Limit switch Y–
M2628 Limit switch Z+
M2629 Limit switch Z–
M2630 Limit switch 4+
M2631 Limit switch 4–
M2632 Limit switch 5+
M2633 Limit switch 5–
Example:
PLC-program example of changing the traverse ranges. The PLC-input I10 is used as a condition for
change.
I10 = 0 Traverse range 1
I10 = 1 Traverse range 2
.
127 LN I10 ;Traverse range 1
128 AN M555 ;already done?
129 R M2816 ;select traverse range 1
130 R M2817 ;select traverse range 1
131 S M2824 ;activate change
132 S M555 ;edge recognition traverse range1
133 R M556 ;reset edge recognition traverse range2
134 L I10 ;traverse range2
135 AN M556 ;already done?
136 S M2816 ;select traverse range2
137 R M2817 ;select traverse range2
138 S M2824 ;activate change
139 S M556 ;edge recognition traverse range2
140 R M555 ;reset edge recognition traverse range1
.