Classic Haas Control (CHC) - Create Your Own G-codes and M-codes

Do you find that you regularly repeat the same lines of code in different programs - for a specific operation like positioning a tool in a hole before starting a cycle, or perhaps moving the machine to a certain load/unload position?

If so, then Haas engineers have a timesaving feature installed in all Haas controls that will help you reduce the programming you have to do, while maintaining easy access from any program within the control.

The function is called Aliasing. It is available on Haas mills and lathes, and can be used for G or M codes, depending on the user's preference. Here's how it works:

Parameter 81 is for an M-code call of program number O9000. So, for example, if Parameter 81 contains the value 37, when the control reads the M37 line in the program, it would call program O9000 and run it, before returning to the original program and continuing from the line after the M37 call.

So we would have:


T1 M06;

G0 G90 G54 X0. Y0. S1500 M03;

G43 H1 Z50. M8;

. (Run normal program)



M37; (Call O9000 program which positions table for easy load/unload of large part)


Parameter 81 through 90 are for M-codes, and refer to program numbers O9000 through O9009. Parameters 91 through 100 refer to G-codes, and specifically program numbers O9010 through O9019.

Note: If a code is used that already exists within the standard G or M codes, such has G84, then the aliased program command will take precedence, and in this instance, the tapping cycle would be ignored. Also be aware that some probing systems utilize the O9xxxx series program numbers for their own cycles, and care should be taken in this regard. Haas applications engineers are available to assist if you have difficulties, or refer to the original manuals supplied with your machine - Mill Operator's Manual - Aliasing or the Lathe Operator's Manual - Aliasing

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.