HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 724)

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TNC 407/TNC 415/TNC 425 3 Machine interfacing 01.98
MP1945 Factor for acceleration pre-control of the rotational speed controller
Entry: 0.000 to 9.999 [V/(m/s2)]
MP1945.0 X axis
MP1945.1 Y axis
MP1945.2 Z axis
MP1945.3 4th axis
MP1945.4 5th axis
MP1950 Polarity for torque signal
Entry: %XXXXX
Bit 0 X axis 0 = positive
Bit 1 Y axis 1 = negative
Bit 2 Z axis
Bit 3 4th axis
Bit 4 5th axis
The polarity of the nominal voltage can be modified with this MP.
MP1040 is still active but for internal voltage between position and speed controller.
MP210 is only active for position encoders. The counting direction for the rotary encoder
is compensated with MP1950.
MP1951 Select measuring system for position control
Entry: %XXXXX
Bit 0 X axis 0 =linear encoder for position control
Bit 1 Y axis 1 =motor rotary encoder for position control (for trimming
Bit 2 Z axis speed controller only)
Bit 3 4th axis
Bit 4 5th axis
MP1955 Ratio of grating period LS to ROD
Entry: 0.1 to 100
MP1955.0 X axis
MP1955.1 Y axis
MP1955.2 Z axis
MP1955.3 4th axis
MP1955.4 5th axis
The ratio of grating periods of the linear encoder to the motor rotary encoder should be greater than
5 (see MP1970).
Example: 2000 lines per revolution for the rotary encoder 4 mm screw pitch
2 µm grating period with ROD 20 µm grating period with LS
Grating period of rotary encoder:
4000 [µm]
2000 [lines]
= 2 [µm]
Entry value for MP1955:
20 [µm]
2 [µm]
= 10