I CNCed my milling machine and am making a CNC plasma torch. I am using my own program that gets its 3D from a gray scale .BMP like Compucarve or follows a line on a bitmap picture. I bought this Mach3 interface board cheap on eBay, thinking I will eventually want to run G code. There is very little documentation.
I would like to use this board with my own program. I can set the data and control bits but can't read the status bits or turn on the 3 relays. I don't see any logic chips except the 4 enable pins on 2 the 74HC244 bus drivers. They say that G codes M3 and M5 turn the power relay on and off. M7 and M9 operate the coolant relay. Can anyone tell me what signals Mach3 sends, on what pins for those M codes?
I would like to use this board with my own program. I can set the data and control bits but can't read the status bits or turn on the 3 relays. I don't see any logic chips except the 4 enable pins on 2 the 74HC244 bus drivers. They say that G codes M3 and M5 turn the power relay on and off. M7 and M9 operate the coolant relay. Can anyone tell me what signals Mach3 sends, on what pins for those M codes?