How Do You Interface A Haas Indexer To A CNC Machine (Haas 4-Wire Interface Cable)?
Many times I have been asked how to interface a Haas indexer to a machine tool. This Howto will discuss the electrical connection for a Haas 4-wire interface cable to a CNC machine. Typically, I have connected the Haas 4-wire interface cable to machines with 24VDC input and output systems. This may not be the case for your machine. If you cannot tell what you have using your schematic, and how to use the information in this Howto, you probably shouldn’t attempt this. Turn off all power to your machine and mount the indexer to the machine table. Connect all required cables to the Haas control box. You will also need to connect a line for compressed air for the indexer brake. Using the machine electrical schematic, you will need to locate: – the external M-function finish signal. Sending a signal to this input will end an active M-code when the indexer is rotating. – the input common. This is the signal that is sent to the input for the machine. This is usually the same signal that is co
