47
CNC System Instruction
The operation sequence of M07 in flame cutting operation is as follows:
Open acetylene(gas) valve and ignite the torch if the valve is not open.
Lower the cutting torch(for time delay of torch lowering, see M71 command);
Open the oxygen preheating valve and count preheating time delay. If the preheating time is insufficient, it will be pro-
longed to 150 seconds automatically by pressing [PAUSE] key. If preheating is done in the midway, press [START]
key to abort the time delay. The new preheating time will be automatically saved in the parameter of preheating time
delay.
Lift the cutting torch(and count the time delay of lifting torch, M72);
Open the cutting oxygen valve(M12), count the time delay and lower the cutting torch(count the time delay of lowering
torch , M73).
Switch on height controller(M38) and run the subsequent program.
The operation sequence of M07 in plasma cutting operation is as follows:
Lower the cutting torch(and count the time delay of lowering torch, see M71);
If hole positioning option is enabled(refer to SETUP), the cutting torch will move down until hit the lower limit
switch. Then the cutting torch will move up until the hole positioning time delay is up.
Turn on the arc ignition switch.
Test the signal of "Arc Voltage Successful", which will not be tested if the arc voltage test option is taken to 0(not
test). When arc ignition is successful, the piercing time delay will start to count in seconds.
Switch on height controller (M38) and run the subsequent program.
M08: fixed loop of cutting stop
The operation sequence of M08 in flame cutting operation is as follows:
1.Close the cutting oxygen valve(M13).
2.Turn off the height controller(M39).
3.Lift the cutting torch(M70).
The operation sequence of M08 in plasma cutting operation is as follows:
Turn off the arc voltage switch.
Turn off the height controller(M39).
Lift the cutting torch(M70).
M50: Piercing action
Lift the cutting torch(M72). There is no this step in plasma cutting operation.
Open the cutting oxygen valve(M12) or turn on plasma arc ignition and check for the signal of "Arc Voltage Success-
ful".
Lower the cutting torch(M73). There is no this step in plasma cutting operation.
Switch on height controller(M38).
M52: Fixed loop of ignition
Operation sequence: open acetylene(gas) valve(M10); turn on the high voltage ignition(M20); count the ignition
time delay and turn off the high voltage ignition(M21).
M70: Fixed loop of lifting torch
Used at the beginning of a program and at the end of cutting section, this command is to raise
the cutting torch for possibility to move quickly to next cutting position. The operation sequence
is as follows: turn on the torch lifting switch(M14); count the time delay of lifting torch(refer to
7.3 for flame parameter); turn off the torch lifting switch(M15).
M71: Fixed loop of lowering torch
This command is used before piercing operation, opposite to M70 in function and little bit smaller in value. Because
of gravity, the lowering action is faster than lifting action. Operation sequence: turn on the torch lowering switch
(M16), count the time delay of lowering torch(refer to 7.3 for flame parameter) and turn off the torch lowering
switch(M17).
