Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 83

8.2 CNC M-Function
8.2 8.2 CNC 8.2 CNC CNC M-Function M-Function M-Function
8.2.1 8.2.1 Program Program
8.2.1 8.2.1 Program Program Stop
M00 is one-shot M function, and it is post-M function.
The program can be stopped, so that the operator could measure the tool and the part, adjust
part and change speed manually, and so on.
When the program is stopped, the spindle is stopped and the coolant is off. All of the current
modal information remains unchanged. Resuming program could be executed by pushing
"Cycle Run" button on the machine control panel.
8.2.2 8.2.2 Optional Optional
8.2.2 8.2.2 Optional Optional Stop
M01 is one-shot M function, and it is post-M function.
Similarly to M00, M01 can also stop the program. All of the modal information is
maintained. The difference between M00 and M01 is that the operator must press M01
button ( ) on the machine control panel. Otherwise, the program would not be stopped
even if there is M01 code in the program.
8.2.3 8.2.3 End End of of of of Program End Program Program
8.2.3 8.2.3 End Program (M02)
M02 is one-shot M function, and it is post-M function.
When M02 is executed, spindle, feed and coolant are all stopped. It is usually at the end of
the last program block. To restart the program, press "Cycle Run" button on the operational
panel.
8.2.4 8.2.4 End End End of of of of Program
8.2.4 8.2.4 End
(M30) (M30)
(M30) (M30)
M30 is one-shot M function, and it is post-M function.
Similarly to M02, M30 can also stop the program. The difference is that M30 returns control
to the beginning of program. To restart the program, press "Cycle Run" button on the
operational panel.
Stop Stop (M00) (M00)
Stop (M00) (M00)
Stop Stop (M01) (M01)
Stop (M01) (M01)
(M02) (M02)
(M02)
Program Program with with
Program with with return
return return return to to to to the the the
the beginning
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8. Miscellaneous Function
beginning beginning of of of of program beginning program program
program