CNC G-Code File Transfer & DNC Software Services

Controlink Systems LLC has been solving real shop-floor challenges since 1998—helping machinists across U.S. manufacturing facilities send, receive, and manage CNC programs with speed and confidence. Whether you run a small screw machine shop or a multi-machine production floor, our DNC software scales to match your operation, reduce scrap, and keep your machines cutting parts.

CNC machine operator transferring G-code files using DNC software on a shop floor

Our CNC G-Code File Transfer & DNC Software Services

Explore our complete lineup of CNC/DNC software solutions designed to streamline program management and maximize shop productivity.

Machine Link™

Core CNC/DNC file transfer software for sending, receiving, editing, and managing G-code programs. Reliable RS-232 serial communication with every CNC machine in your shop, starting at $195.

Machine Link™ PLUS

All the power of Machine Link™ with support for six simultaneous communication sessions. Ideal for shops managing multiple CNC machine tools from a single computer without interrupting drip feeds.

Machine Link™ QUICK Serve

Shop-floor automation that lets machinists request CNC files remotely without leaving their machines. Continuously scans for requests and serves the latest engineering-approved file directly to the control.

Machine Link™ QUICK Serve PRO

Enterprise-grade shop-floor automation supporting up to 64 simultaneous CNC communication sessions. Remotely manage an entire production floor from a single computer and eliminate unnecessary floor walks.

PDA‑DNC™

Pocket PC DNC software delivering extreme shop-floor mobility. Upload and download CNC programs wirelessly, configure unlimited machine controls, and drip-feed most CNC machines—all from your pocket.

Engineering Services

Custom software and hardware solutions for process monitoring, shop-floor automation, PLC integration, vibration analysis, and end-of-line testing. Leveraging NI Partner Network expertise since 2000.

Built for Machinists

Smarter CNC Program Management for Your Entire Shop

Managing CNC G-code files shouldn't slow your shop down. Controlink Systems LLC delivers software solutions that fit every level of operation—from a single-machine job shop to a multi-machine production facility running 64 simultaneous connections. Our tools keep machinists at their machines, engineers in control of approved files, and your shop floor focused on making quality parts. With over 25 years of real machining expertise behind every product, you get software that simply works.

DNC software dashboard managing multiple CNC machine file transfers simultaneously
Proven in Production

Trusted by Industry Leaders

See how manufacturing facilities across the U.S. use Controlink software to boost productivity and reduce scrap.

"Machine Link™ was easy to setup and we were able to quickly back-up all of our CNC program files from 46 different machine tools. We also, within minutes, established successful communications to a machine we had never spoken with before. It works great!"

Richard Recker

"Machine Link™ is great! It's reliable and very easy to use. We manufacture high precision molds and use Machine Link™ to download very large files. We have never had a problem with it."

Chris Wiesmann

"Machine Link™ really works well. We use its 'Search and Replace' capabilities virtually everyday. We can download a program from the control, make some quick changes, then send it right back."

Royce Burton

"Machine Link™ is easy to use, was easy to setup, and worked the first time with no problems and I don't even know how to operate Windows. It is far superior to any other communication software I have ever tried. I love it!"

Ken Havard

"Machine Link™ has significantly improved our productivity. We are now spending seconds doing what took us about thirty minutes before, since we had to manually enter each program. Plus, Machine Link™ is so easy to use that anybody in the shop can use it with minimal training."

Greg Scheldberg

"Our daily activities in the Machine Shop have definitely become more manageable since installing Machine Link™. Machine Link™ has helped us to improve accuracy of records along with increased machine utilization. The bottom line is to say that we have overcome some big, big obstacles in our day to day..."

Steve Lisano

"Machine Link™ was easy to setup and we were able to quickly back-up all of our CNC program files from 46 different machine tools. We also, within minutes, established successful communications to a machine we had never spoken with before. It works great!"

Richard Recker

"Machine Link™ is great! It's reliable and very easy to use. We manufacture high precision molds and use Machine Link™ to download very large files. We have never had a problem with it."

Chris Wiesmann

"Machine Link™ really works well. We use its 'Search and Replace' capabilities virtually everyday. We can download a program from the control, make some quick changes, then send it right back."

Royce Burton

"Machine Link™ is easy to use, was easy to setup, and worked the first time with no problems and I don't even know how to operate Windows. It is far superior to any other communication software I have ever tried. I love it!"

Ken Havard

"Machine Link™ has significantly improved our productivity. We are now spending seconds doing what took us about thirty minutes before, since we had to manually enter each program. Plus, Machine Link™ is so easy to use that anybody in the shop can use it with minimal training."

Greg Scheldberg

"Our daily activities in the Machine Shop have definitely become more manageable since installing Machine Link™. Machine Link™ has helped us to improve accuracy of records along with increased machine utilization. The bottom line is to say that we have overcome some big, big obstacles in our day to day..."

Steve Lisano

"Machine Link™ was easy to setup and we were able to quickly back-up all of our CNC program files from 46 different machine tools. We also, within minutes, established successful communications to a machine we had never spoken with before. It works great!"

Richard Recker

"Machine Link™ is great! It's reliable and very easy to use. We manufacture high precision molds and use Machine Link™ to download very large files. We have never had a problem with it."

Chris Wiesmann

"Machine Link™ really works well. We use its 'Search and Replace' capabilities virtually everyday. We can download a program from the control, make some quick changes, then send it right back."

Royce Burton

"Machine Link™ is easy to use, was easy to setup, and worked the first time with no problems and I don't even know how to operate Windows. It is far superior to any other communication software I have ever tried. I love it!"

Ken Havard

"Machine Link™ has significantly improved our productivity. We are now spending seconds doing what took us about thirty minutes before, since we had to manually enter each program. Plus, Machine Link™ is so easy to use that anybody in the shop can use it with minimal training."

Greg Scheldberg

"Our daily activities in the Machine Shop have definitely become more manageable since installing Machine Link™. Machine Link™ has helped us to improve accuracy of records along with increased machine utilization. The bottom line is to say that we have overcome some big, big obstacles in our day to day..."

Steve Lisano
The Controlink Difference

Why Choose Controlink Systems LLC?

We combine deep machining knowledge with powerful software engineering to deliver solutions that work—every shift, every machine, every time.

25+ Years Experience

Developing CNC/DNC solutions since 1998, trusted by U.S. manufacturers from small shops to national labs.

NI Partner Network

Certified NI Partner since 2000, delivering validated hardware and software solutions for industrial environments.

Scales With Your Shop

Software tiers from single-machine setups to 64-machine simultaneous DNC sessions—grow without switching platforms.

Built by Machinists

Every product is developed with the everyday shop in mind by a team that genuinely understands the machining process.

About Controlink Systems LLC

A passionate team of engineers who know machining inside and out.

Founded in 1998 in Lawrenceburg, Indiana, Controlink Systems LLC was built on a simple belief: software for machinists should be developed by people who understand machining. Over the past 25+ years, the company has grown from a CNC/DNC communications specialist into a comprehensive engineering services firm serving manufacturers across the United States—from precision job shops to national research laboratories like Oak Ridge National Laboratory. As a proud member of the NI Partner Network since 2000, Controlink brings validated hardware and software expertise to every project. Their reputation for reliability earned recognition from The Timken Company in 2000, which highlighted their innovative DNC technology. Today, the company continues its mission of linking systems together and solving complex manufacturing challenges with user-friendly, shop-proven solutions.

16+ Major CustomersTrusted by industry leaders including 3M, Kodak, Timken, and Oak Ridge National Laboratory
25+ Years in BusinessDeveloping reliable CNC/DNC software solutions since 1998
NI Partner Since 2000Certified provider of NI software and hardware for industrial manufacturing

Frequently Asked Questions

How does CNC Connect work?

CNC Connect refers to the process of linking a computer to CNC machine tool controls via RS-232 serial communication or network connections. Controlink's DNC software manages this link—continuously scanning for file requests, serving the correct G-code program to the machine, and allowing engineers to monitor transfers in real time. The setup is configurable for any CNC control, old or new.

Who developed CNC Connect?

What is DNC software and how does it benefit my shop?

Which CNC machine controls are compatible with your software?

How many CNC machines can I connect simultaneously?

Can I try the software before purchasing?

What happens if my computer fails and I need to reinstall the software?

Do you offer custom engineering solutions beyond standard DNC software?

Still Have Questions About Our DNC Software?

Talk to our engineering team for a free consultation and product recommendation.

Certified & Recognized

Awards and Recognition

Timken Company Innovation Recognition award logo for Controlink Systems LLC

Timken Innovation Recognition

Featured in Timken Exchange for innovative DNC software achievement.

NI Partner Network certification logo for Controlink Systems LLC

NI Partner Network Member

Certified NI Partner providing validated software and hardware since 2000.

25 years in business badge for Controlink Systems LLC

25+ Years in Business

Trusted provider of CNC/DNC solutions for U.S. manufacturers since 1998.

Ready to Streamline Your CNC File Management?

Tell us about your shop setup and we'll recommend the right DNC software solution. Our team is available Monday through Friday, 9AM–5PM, and ready to help you get more from your machines.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (800) 838 3479 You can also send us a quick email at support@controlinksystems.com