HEIDENHAIN TNC 306 Technical Manual - Manual (Page 131)

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TNC 406/TNC 306 2 Reference marks 4-31
2.1.2 Encoders with one reference mark
Machine parameter MP1350.x=1
Reference marks
Closed
Open
Trip dog
"Reference end position"
Traverse direction MP1320
For linear measurement using a rotary encoder a reference pulse is produced on each revolution of
the encoder. It must be ensured that, after switching on the machine, always the same reference
pulse is evaluated. This can also be achieved by using the trip dog "Reference end-position."
Reference pulse
Closed
Open
Trip dog
"Reference end position"
Traverse direction MP1320
Measuring length
Desired reference pulse