HEIDENHAIN TNC 306 Technical Manual - Manual (Page 109)

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TNC 406/TNC 306 1 Machine axes 4-9
MP32 Checking the edge separation of the encoder signals
Entry range: 0 to 31
Bit 0 X axis +0 = not active
+1 = active
Bit 1 Y axis +0 = not active
+2 = active
Bit 2 Z axis +0 = not active
+4 = active
Bit 3 Axis 4 +0 = not active
+8 = active
Bit 4 * Axis 5 +0 = positive
+16 = negative
* only TNC 406