Machine Axes; Signal Period; Linear Measurement; Measuring Systems - HEIDENHAIN TNC 415 Technical Manual

1 Machine axes

The HEIDENHAIN contouring controls TNC 407/TNC 415 permit the control of up to five machine
axes and the main spindle (see also under "Servo positioning").
The machine parameter MP10 can be set to determine 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: %xxxxx
Bit 0 X axis
Bit 1 Y axis
Bit 2 Z axis
Bit 3 4th axis
Bit 4 5th axis

1.1 Measuring systems

Incremental measuring systems can be attached to the HEIDENHAIN contouring controls.
See also chapter "Mounting and electrical installation ".

1.1.1 Signal period

The signal period of the attached measuring system in µm or
parameter MP330.x .

Linear measurement

For linear measurement systems with sinusoidal output signals the signal period is the same as
the graduation period:
Signal period (~) = grating period
The standard-linear measurement systems 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 (~) =
Up to 3 decimal places can be entered in MP330.x.
4-6 TNC 407/TNC 415/TNC 425
0 = not active
1 = active
ballscrew pitch [mm] • 1000 [mm / mm]
line count
1 Machine axes
°
1
is entered in the machine
1000
01.98