HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 214)

01.98
TNC 407/TNC 415/TNC 425 3 Servo positioning of the NC-axes 4-89
3.6 Controlled axes
The machine parameter MP50 determines which of the five NC-axes should be controlled.
MP50 Controlled axes
Entry: %xxxxx
Bit 0 X axis 0 = not controlled
Bit 1 Y axis 1 = controlled
Bit 2 Z axis
Bit 3 4th axis
Bit 4 5th axis
Further parameters for the NC-axes may be found in the section "machine axes".
The PLC functions which are described in the following sections are only effective for controlled
axes.
3.6.1 Axis-enable, feed rate 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").
Marker Function Set Reset
M2000 Axis enable X NC NC
M2001 Axis enable Y
M2002 Axis enable Z
M2003 Axis enable 4
M2016 Axis enable 5
The feed rate enable must be specified for all axes by M2451 and complement marker M2467 or
through byte B520 before the axes can be moved. If the feed rate enable is removed, the analogue
voltage is output as 0 V and the axes immediately stop moving. The letter "F" is then highlighted in
the status display.