HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual
Page 210
3 Servo positioning of the NC-axes
4-85
3.5.2 Position monitoring for operation with feedforward control
In operation with feedforward control the ranges for continuous position monitoring are determined
by MP1410 and MP1420 lag monitoring. The monitoring is active as soon as the axes are under the
control of the position control loop.
If the limits of MP1410 are exceeded, the error message
"Position error"
will appear, which can be cancelled with the "CE" key. If the limit of parameter MP1420 is exceeded,
the flashing error message
"Gross positioning error A"
appears. This error can only be cancelled by switching off the control.
If clamped axes cause the error message "Position error", a residual voltage can remain at the
nominal value output, since the machine axes can no longer be traversed. MP1150 can be used to
program a time after which the residual voltage becomes zero. After this period a nominal/actual
value transfer is carried out. If the error message is cancelled by "CE" before the time has elapsed
the nominal/actual value transfer is carried out and the residual voltage is switched off.
The machine parameter functions in operation with lag as well as with feedforward control.
MP1410
Position monitoring in operation with precontrol (cancellable)
Entry: 0.0010 to 30.0000 (mm)
MP1410.0
Axis X
MP1410.1
Axis Y
MP1410.2
Axis Z
MP1410.3
4th axis
MP1410.4
5th axis
MP1420
Position monitoring in operation with precontrol (EMERGENCY STOP)
Entry: 0.0010 to 30.0000 (mm)
MP1420.0
Axis X
MP1420.1
Axis Y
MP1420.2
Axis Z
MP1420.3
4th axis
MP1420.4
5th axis
MP1150
Delay time before switching off the residual voltage on error message
"Position error"
Entry: 0 to 65.535 (s)