HEIDENHAIN TNC 306 Technical Manual - Manual (Page 115)

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TNC 406/TNC 306 1 Machine axes 4-15
Example:
PLC program example for changing the software limit switch ranges. PLC-input I10 is used as a
condition for change.
I10 = 0 Software limit switch range 1
I10 = 1 Software limit switch range 2
.
127 LN I10 ;Range 1
128 AN M555 ;already done?
129 R M2816 ;select range 1
130 R M2817 ;select range 1
131 S M2824 ;activate change
132 S M555 ;edge recognition range 1
133 R M556 ;reset edge recognition range 2
134 L I10 ;Range 2
135 AN M556 ;already done?
136 S M2816 ;select range 2
137 R M2817 ;select range 2
138 S M2824 ;activate change
139 S M556 ;edge recognition range 2
140 R M555 ;reset edge recognition range 1
M555
M556
I10
M2816
M2817
M2824