NCT Group NCT 990T - Manual (Page 99)

12 Debugging Part Program
99
12.3 Machine Lock Function
Switch MACHINE LOCK can
be reached on OPERATOR’S
PANEL or POSITION screens.
After pressing the action menu
key
F5
CONDITIONS
action menu must be selected,
than softkey MACHINE LOCK
needs to be pressed.
If NCT machine control board is
used select the button.
The locked state of the machine
is indicated by caption LOCK in
the 8
th field (general NC state)
of the status bar.
If the switch is on:
– the interpolator does not give out any command to the position control loop on either axis,
as well as
– no function is executed by the PLC at all.
Functions machine lock and dry run can be combined, i.e., both can be switched on at the same
time. The POSITION screen and the GRAPHIC POSITION screen show the path already
drawn. If switch dry run is on, the speed is high, if it is off, the speed is the programmed
feedrate.
If machine lock is switched off, the momentary axis positions can be seen again on the
POSITION screen of control.
L Note:
Generally key MACHINE LOCK can be switched in one of the manual modes in case
the axes are in STOP state For more turn to the machine tool builder for an information
material.
12.4 Other Locking Possibilities
Other locking possibilities may be at disposal optionally. These are as follows:
Function Lock
This means, that the control does not execute any function sent to PLC (M, S, T, B ect.)
If NCT machine control board is used select the button.
Axis Lock
The axes can be locked separately. In this case the locked axis (axes) does (do) not move,
while the others do.