HEIDENHAIN TNC 306 Technical Manual - Manual (Page 105)

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TNC 406/TNC 306 1 Machine axes 4-5
1 Machine axes
The TNC 406 and TNC 306 contouring controls from HEIDENHAIN permits the control of up to four
machine axes.
The 5th axis cannot interpolate with other axes. This axis can only be started in manual mode or in
the NC-program with a M-function (PLC-positioning)
Machine parameter MP10 can be set to define which axes should be operational on the machine.
If necessary, MP10 can be used to select all the axes functions (control, display, pass over
reference marks etc.).
MP10 Active axes
Entry range: 1 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 = not active
+16 = active
1.1 Measuring systems
Incremental encoders can be connected to HEIDENHAIN contouring controls.
See also chapter "Assembly and electrical installation ."
1.1.1 Signal period
The signal period of the connected encoder in
µm or 0.001° is entered in machine parameter
MP330.x .
Linear measurement
For linear encoders with sinusoidal output signals the signal period is the same as the graduation
period:
Signal period (~) = grating period
The standard linear encoders from HEIDENHAIN have a graduation period of 20
µm
(LS models; except for LS 101 and LS 405: 10
µm) and 100 µm (LB model) .
If linear measurement is performed by rotary encoder and ballscrew, the line count of the rotary
encoder (see encoder technical data) as well as the ballscrew pitch must be considered when
calculating the signal period:
Signal period (~) =
spindle pitch[mm] · 1000 [
µm/mm]
line count
Up to 3 decimal places can be entered in MP330.x.
*
only TNC 406