HEIDENHAIN TNC 306 Technical Manual - Manual (Page 151)

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TNC 406/TNC 306 3 Servo positioning of the NC-axes 4-51
3.6.2 Axis enable
After switching on the control voltage the "Axis-enable markers" are automatically set by the NC, so
that the machine axes can be held in closed position loops by the control.
The axis-enable markers can be reset by the NC if the control loop is opened by the PLC (see
section "Open control loop").
Set Reset
M2000 Axis enable X NC NC
M2001 Axis enable Y
M2002 Axis enable Z
M2003 Axis enable 4
M2004* Axis enable 5
* only TNC 406