For the Alarm signal you need to go into Config menu then General Config  and down at the lower left you will see the option for Programme Safety Lockout.

There is a list of OEM codes  in the thread at the top of the forum.
Hood

Dear Sir
        Now I finish testing for input1. It is work. Thank..... I have another question. I want to move my axis for Reference All Home function at the start of Mach3 program. I found some startup function for Gcode in General Config. I insert G30 for return home. It is working. But I need All Reference Home at the start of mach3. How can I do for this. I think you understand what I mean. My English skill is a little bad.

High Tech Key

Open notepad and type
DoButton( 24 )
DoButton( 23 )
DoButton( 22 )
DoButton( 25 )

Then save it as m101.m1s in the macro folder of the profile you use, for example if you use the default Mach3Mill profile you save to C:\Mach3\Macros\Mach3Mill

Then put m101 in the initialisation string.

You  dont have to save it as m101, you can save it as any m number you like as long as its above 100 and it is not being used already by another custom macro.

Hood

Dear Hood

I finished my cnc conversion with this motor drive and motor(SN 2000 serial servo). Thank you so much for your valuable advice.

But I have some problem with this machine. My machine going home at the start of mach3. My motor drive often got error Y or X homming sequence at the start of my machine. The error code is Error3. I turn off the drive that show error and turn on again. After that everything is ok. The drive error often get at the start of my machine. I think my driver should be change some parameters. I try to change some parameter reference from the manual book. But It didn't work. I don't know how to solve this problem. Please help and advice me. Thank you.

High Tech Key

According to the manual Error 3 is over current, check that you do not have the acceleration set too high or that your motors are not too small for the weight you are trying to move. Also check all of the wiring connections are secure.
Hood