TNC 620






    MC main computer with operating panel and integrated 15-inch or 19-inch screen (portrait orientation) for multitouch operation

    MC main computer with separate TE 730 or TE 735 operating panel and integrated 15-inch screen

    Operating system

    HEROS 5 real-time operating system for machine control


    1.8 GB (on CFR compact flash memory card) for NC programs

    Input resolution and display step

    Linear axes: down to 0.01 µm

    Rotary axes: down to 0.000 01°

    Input range

    Maximum 999 999 999 mm or 999 999 999°




    Linear in 4 axes

    Linear in up to 5 axes (export license required)

    Circular in 2 axes

    Circular in 3 axes with tilted working plane

    Helical: superimposition of circular and straight paths

    Block processing time

    1.5 ms (3-D straight line without radius compensation)

    Axis feedback control

    Position loop resolution: signal period of the position encoder/1024

    Cycle time of interpolator: 3 ms

    Spindle speed

    Maximum 100 000 rpm (with 2 pole pairs)

    Error compensation

    Linear and nonlinear axis error, backlash, reversal peaks during circular movements, thermal expansion

    Static friction, sliding friction, reversal error

    Data interfaces


    RS-232-C/V.24 max. 115 kbit/s

    Extended data interface with LSV-2 protocol for remote operation of the TNC 620 over the data interface with the HEIDENHAIN software TNCremo or TNCremoPlus

    Gigabit Ethernet interface 1000BASE-T

    5 x USB (1 x front USB 2.0; 4 x back panel USB 3.0)

    HEIDENHAIN-DNC for communication between a Windows application and TNC (DCOM interface)


    Fast and simple troubleshooting through integrated diagnostic aids

    Ambient temperature

    Operation: +5 °C to +40 °C

    Storage: –20 °C to +60 °C