They’re still not cheap, but they’re starting to fall into the range of what a DIY CNC’er might afford.
They’re also sold as a way to update obsolete controls on industrial CNC Machines to bring the more up-to-date features and performance.
These controllers are marketed for converting manual machines to CNC, for example, a Bridgeport manual milling machine. Just a small step down from Industrial OEM Controllers are CNC Retrofit Controllers like Centroid. You might find the article I did that analyzes what features Hobby CNC Controllers are missing compared to industrial controls intersesting. I’m not going to talk further about these controls as they’re a pretty advanced topic. If they keep coming down, these controls may make more sense on a DIY CNC Project than it seems. It looks like they’re testing the low-end market. While these controls are expensive, lately I’ve seen controls such as the low-end of the Siemens line coming down in price in places like eBay. Industrial Quality Servo Drives, Home / Limit Switches, and all the rest really run up a hefty price tag in a hurry. Not only is the controller itself expensive and fairly hard to come by (though one does see them from time to time on eBay), but Industrial OEM Controllers expect premium sub-components too. These are not very common for DIY projects due to their expense. Industrial OEM CNC Controllers are the ones used on Industrial CNC Machines like Haas. Types of CNC Controllers Industrial OEM CNC Controllers
CNC Controller: Software, Drivers, & Boards