NCT Group NCT 990T - Manual (Page 92)

10 Program Execution Start and Stop
92
10 Program Execution Start and Stop
The program execution is started by the use of the START button.
The program execution can be stopped by means of the following functions and keys:
– with the STOP button,
– with the RESET key,
– at the end of block execution in the single block mode ,
– after executing programmed stop command M00,
– as the effect of conditional stop command M01, if optional stop switch is on,
– after executing program end commands M02, M30.
10.1 Starting Program Execution
In the following cases the program execution is started by pressing START button :
– in jog, incremental jog or manual handle feed mode, after single block has been entered and
terminated,
– in automatic mode, if program is selected for execution from memory or DNC,
– in manual data input mode, if program is selected for execution.
Error message
NOT EXISTING PROGRAM
is displayed by pressing START button, if no program is selected for execution. START state
is indicated by caption STRT in the 3
rd field of status bar.
10.2 Feed Stop
During program execution by pressing STOP button START state is cancelled. The
axes decelerate and stop. The execution of functions (M, S, T, B) in the given block is
continued till the end of block. STOP state is indicated by caption STOP in the 3
rd
field of the
status bar.
In the following cases the STOP button is ineffective:
– G63, i.e. state of override inhibit,
– values of variable #3004 listed in programmer’s manual, and
– during thread cutting G33, G34 and tapping cycles G84.1, G84.
10.3 RESET
If reset key is pressed during program execution, START or STOP state is canceled.
The axes decelerate and stop, even if control executes operation, where the use of feedrate
override switches and STOP button is ineffective (e.g.: G33, G34, G76, G78, G84.1, G84).