Acorn and AcornSix Laser CNC Control
Centroid Laser CNC controller kits are both a CNC Hardware and CNC Software DIY system designed to work together for easy CNC setup and operation with minimal fuss. Works with a wide variety of PWM controlled Lasers. The Centroid CNC Laser cutting and engraving system has useful CNC Laser features such as Laser Power Velocity Modulation where the Laser Power is adjusted automatically based on actual machine velocity.
$363.00
Estimated Shipping Date
- Centroid Acorn CNC controller kit (#14455) includes:
- 1x Acorn CNC control board
- 1x Acorn Plug and Play Relay8 Module
- 1x Dual power 5 VDC and 24 VDC logic power supply
- 50/60 Hz 100-120 VAC/208-240 VAC input power
- 1x Logic power supply hookup leads
- 1x 110 VAC power cord
- 1x 15’ Shielded Ethernet cable
- 1x Plexi Acorn Cover
- 4x 6-32x3/4" Standoffs for Acorn Cover
- 4x 6-32x3/8" Screws for Acorn Cover
- Additional Acorn highlights:
- Comes with Centroid CNC12 "Free" CNC Software Download, Pro and Ultimate Software sold separately
- Touch Screen Responsive Operator Controls
- DIY self-service CNC support thru Centroid Community CNC Forum which is Centroid Technician monitored and maintained.
- Optional Factory Direct Technical Support: $120/hr.
(Note: A 1920x1080 wide screen LCD Display is required and a Touch Screen is recommended.)
Email and Phone orders are also accepted.
Email diysales@centroidcnc.com or call 814-353-9256 ext 122
M-F 9-5 EST to place your orders.
$1,099.00
- Centroid AcornSix CNC controller kit (#15136) includes:
- 1x AcornSix CNC control board
- 2x Acorn Plug and Play Relay8 Module
- 1x Dual power 5 VDC and 24 VDC logic power supply
- 50/60 Hz 100-120 VAC/208-240 VAC input power
- 1x 15’ Shielded Ethernet cable
- 1x Riser Mounting Pan
- Additional AcornSix highlights:
- Comes with Centroid CNC12 "Free" CNC Software Download, Pro, Ultimate, and Ultimate Plus Software sold separately
- Touch Screen Responsive Operator Controls
- DIY self-service CNC support thru Centroid Community CNC Forum which is Centroid Technician monitored and maintained.
- Optional Factory Direct Technical Support: $120/hr.
(Note: A 1920x1080 wide screen LCD Display is required and a Touch Screen is recommended.)
Acorn CNC control kits are both a CNC Hardware and CNC Software DIY system designed to work together for easy CNC setup and operation with minimal fuss.
Centroid "AcornSix" Step and Direction CNC Controller kit: a 6 axis CNC control with built-in motion control CPU.
A reliable, high performance, industrial quality CNC control at a do-it-yourself price. AcornSix utilizes an integrated 1Ghz ARM Cortex A8 Motion Control CPU and communicates with CNCPC via a fast and reliable Ethernet connection. The AcornSix CNC control board controls a wide variety of axis motors and drives with industry standard step and direction command signal. Perfect for many types of machine tools such as: CNC milling machines, a wide variety of CNC Routers, CNC lathes to CNC Lasers, and other specialty applications. Compatible with small to large axis motors of all types and can be used with most any AC brushless servo motor drive packages such as: Delta, Estun, Teco, Teknic, Yaskawa and others. Any drive that accepts step and direction commands. Most all stepper motor drives are compatible with the AcornSix such as the popular Gecko and Leadshine stepper drives. AcornSix runs on Centroid's proven industrial quality CNC control software.
- Mill, Router, Lathe, and Plasma CNC software
- DIY CNC setup Wizard and CNC PC Tuner.
- On board 1Ghz Motion Control CPU
- Hybrid PC based CNC control architecture.
- Fast G code Job Processing
- Fast reliable Ethernet communication with CNCPC
- Runs on Windows 10/11
- Easy setup, CNC software auto recognizes hardware.
- Automatic Hardware Firmware/Driver installation and updates
- Virtual Operators Control Panel
- Customize the UI, change any colors, images, words.
- Hard Operators Control Panel
- Wireless MPG control pendant (Pro license required)
- Touch Screen Compatible
- Runs Standard G & M Codes (Mill, Lathe, Router, Plasma)
- Compatible with CAD/CAM systems
- True G-code back plot graphics w/ cutter comp moves
- G-code backplot checks work envelope & tool heights
- On the fly vary part backplot speed and pause w/ G-code line display
- Real Time Part Graphics, shows tool position while running
- 2000 line S-curve accel/decel look ahead
- Open and Hybrid Closed Loop CNC operation
- Advanced G-code smoothing algorithm
- Advanced G&M code macro programming
- Backlash compensation
- Ballscrew compensation
- Feed rate override operator variable 0-200% at 1% increments
- Rapid rate override
- Spindle Control. on/off cw/cw, speed w/override
- 12 bit analog output 0-10 or 0-5 VDC for VFD control
- PWM output for BLDC or Laser or other PWM control.
- 8 optically isolated inputs, user configurable, expandable
- 8 Relay Outputs, user configurable, expandable
- 5 volt stepper motor drive DB25 drive connection (w/ Mach3 standard pin out AND easy software DB25 pin out definition)
- 24 volt screw terminal for AC axis motor drive connections
- High Speed Encoder Port
- Software or Hardware paired axes
- Auto Squaring of paired axes
- Spindle Encoder RPM display
- Stop and Restart Job at any point
- Tool Check, Jog and Restart at any point
- Cutter Compensation
- Conductive touch probe compatible
- KP-3 Kinematic Touch Probe compatible
- KP-1 Kinematic Touch Probe compatible
- Probing and Digitizing cycles
- Auto Tool Touch Off compatible
- Auto Router Touch Plate compatible
- Extensive Router Touch Plate part setup menus
- Cross Hair Laser support
- Lube Pump control (user configurable to match pump type)
- MDI mode with recent command memory
- Multiple Language Support (user editable!)
- User editable PLC programming
- Part counter, Time, Time estimation
- Future proof, CNC software is updatable
- Notepad ++ G code editor
- Utility Menu
- Backup and Restore CNC config
- Message Display and Logs
- Unlimited Program Storage (Pro License, only limited by hard drive size)
- Large easy to read DRO display
- Simple Fast Menu Driven Operator Interface
- Menu Driven Part setup menus
- Menu Driven Tool setup
- Menu driven machine configuration setup
- Restart Job Automatically
- Run Menu, single block, optional stop, block skip, job repeat, part count, RTG on/off.
- Any axis can be linear or rotary axis
- Auto Home to switch, user selectable direction per axis
- Auto Parking, User editable
- ZRI input homing, encoder or switch
- Auto Home program generation
- User editable Homing program
- Pre-programmed macros for common CNC functions
- Software Travel Limits (+ and – directions)
- Reset Home at any time.
- User configurable Slow, Fast, Max rates
- User configurable axis motor acceleration
- Constant Surface Speed (lathe)
- Threading (lathe)
- Rigid Tapping (mill, router, lathe)
- Threadmilling (Mill and Router)
- Fill in the blank part programming, Canned Cycles.
- Conversational programming that generates G code
- Lathe canned cycles (profile, groove, chamfer, cutoff, turning diameter and end face)
- Variety of Drilling and Tapping Cycles
- Profiling with auto cleanout (lathe)
- Lathe and Plasma Dry Run
- Keyboard Jogging
- User editable Subprograms and Macros
- Engraving compatible (short vector g code no problem)
- Run in Inch or MM mode
- Laser cutting and engraving support
- PWM output control for Laser power
- Advanced Velocity Laser Power Modulation
- Tool Library
- Auto Tool height measurements
- Tool Life Management
- ATC compatible
- Rack Mount ATC setup Wizard
- Carousel ATC setup Wizard
- Lathe Turret ATC setup Wizard
- Customize for any ATC, PLC and Macros
- Distance to go DRO
- Machine Coordinates DRO
- Active G codes display
- Control relays and contactors thru Manual or Program control
- User configurable custom DIY M-codes
- X/Y axis Deskew, corrects for axes out of square.
- USB and Network Drive Compatible
- Build your own CNC App w/ Centroid CNC control API
- Runs on 100-120 VAC -or- 200-240 VAC power input.
- Runs on USA and International Power
- Made in USA, Software and Hardware!
- Free CNC Tech Support
- Acorn "Start Here" Web Page with requirements and How-to Videos.
- All Acorn Documentation (a list of All Acorn related documentation)
- Acorn CNC controller Hookup Schematics (type in "Laser" in the search bar on this page to see all Acorn & AcornSix Laser hookup schematics)
- Acorn CNC Mill Installation Manual
- Acorn Hardware and Software Installation manual
- Mill and Router CNC12 software download (Note: CNC12 installation instructions are in the Acorn Installation Manual
- Centroid CNC control board Solid Models
- Acorn Control Panel options
- Centroid Acorn CNC Community Tech Support Forum (Free Tech Support!)
- Acorn CNC controller buyers FAQ
- Acorn Warranty Info
- CNCPC Requirements
- TB326: Acorn and AcornSix PWM Laser Setup
- LightBurn Setup and Workflow
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Can I buy one Pro Acorn CNC12 license and use it on several Acorn CNC control boards?
No, the Centroid Acorn Pro and Ultimate licenses are tied to the Acorn board serial number. When purchasing a Pro or Ultimate license, the Acorn serial number is required and then a Pro or Ultimate license is created that matches the Acorn board serial. When the CNC12 software starts, it checks the Pro or Ultimate license against the Acorn board that is connected to the CNCPC for a match. If it matches, then that particular level (Pro or Ultimate) of CNC12 software is made active. If it doesn't match, then the CNC12 software runs at the "Free" level. (So Acorn CNC12 will run without any license installed)
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If I buy an Acorn Mill Pro CNC12 license and then decide to upgrade to the Ultimate license how much does that cost?
$299
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Can I buy an Acorn Mill Pro and Acorn Lathe Pro and Acorn Ultimate for use on the same Acorn Board?
Yes.
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Can I ask Centroid to move a Pro or Ultimate software License from one Acorn board to another?
If Centroid issues an RMA for an Acorn board to be returned, any License associated with that board can be transferred to another Acorn board.
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Do I have to state at time of purchase what machine I plan on using the Acorn with?
No. Both the Mill and Lathe Free version of Acorn CNC12 control software is available for download so you can configure the Acorn controller for a wide variety of machine tools. The hardware doesn't care what kind of machine it connected to.
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If I bought an Acorn Mill Pro License, can I use it with the Acorn Lathe Software?
No. The Acorn Pro License is Mill and Lathe specific. There is a Pro License for Mill and there is a Pro license for Lathe.
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If I destroyed the BBG (Beagle Bone Green) that came with my Acorn board can I supply my own?
Yes, but the License file(s) that were issued for that Acorn will not work with the new BBG. Centroid offers License transfer service for $29 which requires you to email us a report.zip file to diysales@centroidcnc.com. Information on how to generate a report.zip file is here.
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How big of a G-code program can I run with the Free version of CNC12 software?
50Kb.To give you an idea of what can be done with the Free version of the Acorn CNC12 software: on our website is a part program for a SEM DC servo motor cover plate, below on the left is the plate being installed and on the right is the tool path that was used to make the cover plate. This G code program to make this part is 5Kb in size. This is pretty typical of a home hobby shop type part. The G code file generated by a cad cam system or in this case Centroid's Intercon conversational programming software (with comments!) to make this part the G-code program is only 5kb in size. The Centroid FREE version of CNC12 has a file size limitation of 50KB so you could run a G code program 10 times this size with the Free version of CNC12. As you can see, you can do a lot even with the Free version of the Acorn CNC12 software.
The 5kb Gcode program used to cut this SEM servo motor cover plate is available here (click to view, right click link and Save as to download).
Note: The Centroid PRO version of CNC12 has no file size limitation so you could run a file as large as the hard drive on the CNCPC and the Ultimate License also has no file size limitation. (only limited by the size of the CNCPC hard drive space)
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How long does it take to ship the Acorn CNC control kit?
Typically the Acorn CNC control kits are in stock ready to ship and ship within one or two business day from Howard, PA via UPS GND. You will receive an email with tracking number when your kit ships.
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Can I order an Acorn CNC control kit over the phone? And do you have resellers in the EU?
Yes. Centroid accepts orders for Acorn kits through our website, phone and email. We do ship internationally! International shipping will be calculated after the sale typical Air Freight cost range in the $70 to $120 for typical Acorn kit international orders. Alternatively, below a list of other locations to purchase the Acorn CNC controller.- USA
- International
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Do you have a list of drives that Acorn works with?
The Acorn CNC controller commands many different types of servo and stepper motor drives with industry standard "Step and Direction" drive communication signals. Any drive that accepts Step and Direction is compatible with the Acorn CNC Controller. The list of known compatible drives is too long to list so we've highlighted a few here:- Yaskawa
- Delta
- Estun
- Panasonic
- DMM
- Teknic Clearpath
- Gecko
- Leadshine
- Teco
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How do I contact Technical Support?
Free Acorn Technical Support is available 24/7 on the Acorn CNC community support forum. Here is how to sign up for the Free Support Forum. Centroid Direct Technical Support is available for $120/hr. one hour min. purchase support here and email support@centroidcnc.com with a current Report.zip file.
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Do I need to purchase a PC from Centroid or can I build my own?
Ready to run Centroid CNCPC's are avalible for sale from Centroid, alternatively you can supply your own CNCPC as long as it meets the Centroid Minimum PC performance specifications found here.
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What is the Acorn Return, Warranty and Repair policies?
Please see this page for complete details.
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Is there a return restocking fee?
Yes. There is a 15% restocking fee on all returned parts and products.
Centroid Laser CNC Software Licenses
$229.00 – $1,399.00
Please see the detailed table below describing the differences between Pro and Ultimate software levels
$229.00 – $1,399.00
Please see the detailed table below describing the differences between Pro and Ultimate software levels
Centroid Acorn Laser CNC Software Levels
Features | Acorn Free v5.24+ | Acorn Pro v5.24+ | Acorn Ultimate v5.24+ |
---|---|---|---|
Mill and Lathe Intercon Conversational programming | Limited to 20 blocks of conversational | Unlimited | Unlimited |
Wireless MPG Pendant WMPG-4 or WMPG-6 support | Not included | Included | Included |
G-code program size | Limited to 50Kb G-code file size | Unlimited G-code file size | Unlimited G-code file size |
Work Coordinates Systems (WCS) | One (G54) | Eighteen (G54-G59 plus extended WCS) starting with v5.08 | Eighteen (G54-G59 plus extended WCS) |
Menu driven Probing cycles | Center of bore | Complete Set of menu driven probing cycles. Bore, Boss, Slot, Web, Inside Corner, Outside corner, Single edge find, find angle, auto probe for CSR | Complete Set of menu driven probing cycles. Bore, Boss, Slot, Web, Inside Corner, Outside corner, Single edge find, find angle, auto probe for CSR |
Menu driven Digitizing cycles | Grid, Radial, Contour, Wall following, limited to 2500 points | Grid, Radial, Contour, Wall following, limited to 2500 points | Unlimited point Grid, Radial, Contour, Wall following |
Auto Tool Height Measurement | Unlimited auto measure on: Reference Tool & Tools 1,2,3 | Unlimited auto measure on all tools. | Unlimited auto measure on all tools. |
Coordinate System Rotation | Manual | Manual | Automatic and Manual |
Tool Library | 10 Tools | 200 Tools, (99 Tools Lathe) | 200 Tools Mill, (99 Tools Lathe) |
Sub Programs and Macros (M98 & G65) Write your own custom macros, many uses | Included | Included | Included |
Cutter Compensation G41/G42 | Included | Included | Included |
Backlash Compensation | Included | Included | Included |
Screw compensation (laser or manual!) | Included | Included | Included |
3 axis simultaneous | Included | Included | Included |
4 th Axis linear or rotary conversational programming. | limited to 20 blocks of Intercon | Unlimited | Unlimited |
Operate as a 2 axis CNC with Manual Quill | Included | Included | Included |
Operate as a 2 or 1 axis CNC control | Included | Included | Included |
Any axis can be Linear or Rotary | Included | Included | Included |
Supported Axes Labels | X,Y,Z,U,V,W,A,B,C Mill/Router/Plasma X,Y,Z,C,A,B Lathe | X,Y,Z,U,V,W,A,B,C Mill/Router/Plasma X,Y,Z,C,A,B Lathe | X,Y,Z,U,V,W,A,B,C Mill/Router/Plasma X,Y,Z,C,A,B Lathe |
Spindle Encoder feedback,w/ RPM display | Included | Included | Included |
Mill Rigid Tapping | Not Included | Included | Included |
Lathe Threading | Not included | Included | Included |
Lathe Automatic CSS | Not Included | Included | Included |
Lathe Rigid Tapping | Not included | Included | Included |
Lathe Automatic Tool Measurement | Unlimited auto measure on: Tools 1,2,3 | Unlimited auto measure on all tools. | Unlimited auto measure on all tools. |
G81 drilling cycles | Included | Included | Included |
Compression Tapping Gcode Cycles | Included | Included | Included |
Mill G-code scaling and mirroring | Included | Included | Included |
True G-code backplot graphics | Included | Included | Included |
Run Time Program Graphics | Included | Included | Included |
Smart Search (stop and restart at any point) | Included | Included | Included |
User Configurable Touch Screen Virtual Control Panel | Included | Included | Included |
Backlash compensation | Included | Included | Included |
CNC Configuration Wizard | Included | Included | Included |
Menu driven Part and Tool setup menus | Included | Included | Included |
Intercon Teach Mode | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Drilling cycles: Drilling, Deep Hole, Chip Breaking | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Pocketing: Circular,Rectangular, Irregular | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Contouring | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Threadmilling | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Conversational Compression Tapping | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Auto Connect Radius | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Lathe Cycles. Auto profile cleanout, grooving, cutoff, chamfer, turning, end face turning, | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon Math/Geometry Help | Limited to 20 blocks of Intercon | Unlimited | Unlimited |
Intercon DXF Import for Mill and Router. | Yes, Limited to 20 blocks of Intercon | Yes, Mill, Router, Plasma only | Yes, Mill, Router, Plasma only. |
Operate in Millimeter or Inches | Yes | Yes | Yes |
XY Diagonal Jogging | Yes | Yes | Yes |
4th axis Jogging | Yes | Yes | Yes |
Software Axis Pairing (pair 4th axis any other axis in software) | No | Yes | Yes |
Auto Squaring of Software Paired axis with auto homing | No | Yes | Yes |
Hardware Axis Pairing | Yes | Yes | Yes |
4th axis G-code moves: 4&1,4&2,4&3,4&1&2,4&2&3,4&1&3&4, 4&1&2&3 | No, "Free" is limited to 3 axis simultaneous moves with single axis 4th axis moves. (aka (3+1) | Yes, 4 axis simultaneous movement with full interpolation. (move any axis in combination with any others) | Yes, 4 axis simultaneous movement with full interpolation. (move any axis in combination with any others) |
BCD Tool Changer output | No | Included | Included |
ATC Programs for Rack Mount | Yes | Yes | Yes |
ATC Programs for Lathe Turret | Yes | Yes | Yes |
CNC Setup Wizard with auto PLC program generation | Included | Included | Included |
PLC Detective Software | Included | Included | Included |
Use one input for all axis Homing | Included | Included | Included |
Laser Engraving | Yes | Yes | Yes |
PWM output for Laser power | Yes | Yes | Yes |
PWM output for Spindle speed control | Yes | Yes | Yes |
Laser power Velocity modulation | Yes | Yes | Yes |
0-5 VDC or 0-10 VDC analog output | Yes | Yes | Yes |
Support for "Probe App" by swissi | No | Yes | Yes |
Laser Examples
Laser Cutting with a DIY CNC Mill
Knifebox Laser Cutting with Acorn DIY CNC
DIY Centroid Acorn CNC Laser Engraving with a Techno Router
Acorn CNC control kit unboxing video
CNCPC Options
$1,350.00
- All-in-one Touch Screen CNCPC (#15021,15022) Features:
- - Pre-loaded with Windows 10/11
- - Pre-configured for CNC PC duty
- - Pre-loaded with Centroid CNC software
- CNC12 'Free' Level of Selected Preinstalled Software Version
- G code Editor
- Intercon
- Stock PLC programs
- Touch Screen Operator Control panel
- Acorn Install Wizard
- - Touch Screen
- - Wifi, Ethernet, webcam with mic, card reader, USB ports
- - Powercord, Keyboard, Mouse
- - Centroid tested and pre-qualified to work with Centroid CNC controllers
- NOTES:
- Model, Specifications and COLOR may vary.
- There are NO VESA mounting holes on this unit.
The Centroid ALLIN1PC comes pre-configured for CNC Duty. It's ready to use and communicate with our Controls. The PCs run Windows 10/11 and are equipped with a Touchscreen. Product may vary from image.
Planning to build or use your own PC as a CNCPC?
Be sure the PC meets the Centroid CNCPC minimum requirements found here.
The latest Centroid CNC software requires a Windows 10/11 PC that meets the requirements.
Laptops are not recommended. Tablets are not compatible.
The minimum CPU performance benchmark is critical for good Plasma Performance. Mobile processors are not compatible.
- If you plan to build your own CNCPC follow the recommendations here.
- If you plan to buy your own PC we recommend the Intel NUC (be sure to purchase a NUC that meets the Centroid minimum pc requirements) and a 1920x1080 16:9 aspect Touch Screen monitor
- Centroid also offers for purchase CNCPC's with preloaded and pre configured software see below.
$799.00
- Centroid Mini CNCPC kit (#15023) includes:
- 1x Intel based Mini PC
- 1x Centroid Aluminum CNCPC Multi-mount Plate
- 2x M3x6 screws to mount the Mini PC to the included plate
- 1x 100-240 VAC power brick
- 1x Pre-installed and pre-configured SSD
- w/ Windows 11 (64-bit)
- w/ CNC12
- Centroid Mini CNCPC (#15023) Features:
- - Use a LCD monitor (regular or Touch screen), 1920x1080 recommended
- - Preloaded with a licensed copy of Windows 11. Windows is pre-configured for CNC PC duty!
- - Preloaded Centroid CNC12 software Mill, Router, Lathe, and Plasma 'Free' version
- - Preconfigured with Centroid Software
- - Preconfigured Notepad ++ G code Editor
- - Mill, Lathe, Plasma Intercon Conversational compatible
- - Centroid CNC setup Wizard
- - Touch Screen Operator Control compatible
- - Intel processor and SSD (solid state drive)
- - HDMI, Ethernet Ports, USB
- - Includes Powercord. Monitor, Keyboard, and Mouse not included.
- - Centroid tested and pre-qualified to work with Centroid CNC controllers
- - Use a LCD monitor (regular or Touch screen), 1920x1080 recommended
- NOTES:
- Model, Specifications and COLOR may vary.
Compatible with:
Laser Accessories
$329.00
- Ether1616 I/O Expansion Kit (#14850) includes:
- 1x Ether1616 Board
- 2x Relay 8 Modules
- 2x Keyed Ribbon Cables
- 1x 24 volt DC power supply
- 50/60 Hz 100-120 VAC/208-240 VAC input power
- 1x Ethernet Switch
- 2x 15’ Shielded Ethernet cable
- 4x 220 Ohm SIP resistors for 5 volt input
- 4x 1k Ohm SIP resistors for 12 volt input
The Ether1616 is an input and output expansion board designed to be used with the Acorn CNC controller. Each Ether1616 board adds an additional 16 optically isolated inputs and 16 relay isolated outputs to the Acorn CNC system, up to three Ether1616 boards can be added to an Acorn system for a total of 56 inputs and 56 outputs. Three different input voltages can be used: 5 volts, 12 volts and 24 volt. Input voltages are mix and match capable and are selectable via bank of four of inputs at a time with the provided plug-in SIP (Single In-line Pack) resistors. The default input voltage is 24 VDC.
Both the Ether1616 and Relay 8 modules provide both Din Rail mounting holes and Standoff mounting holes to allow the DIY installer a wide variety of mounting possibilities!
The provided dedicated power supply is sized properly to provide enough power to drive the 16 relays. There are indicator LED’s on Ether1616 Inputs and on the Relay 8 Modules that indicate the state of the Inputs and Outputs.
The Ether1616 as the name implies communicates with the Centroid CNC12 software via Ethernet connection to the CNC PC. Ether1616 documentation is here.
Requirements for use with Acorn
- CNC12 V.4.20+
$399.00
PLCEXP1616 Kit (part #14575) includes:
1x PLCEXP1616 Board
1x 6 foot shielded Ethernet cable
4x 220 Ohm SIP resistors for 5 volt input
4x 1k Ohm SIP resistors for 12 volt input
The PLCEXP1616 is an input and output expansion board designed to be used with the AcornSix CNC controller using the ethernet cable SCOUT communications protocol. Each PLCEXP1616 board adds an additional 16 optically isolated inputs and 16 relay isolated outputs to the AcornSIX CNC system, up to five PLCEXP1616 boards can be added to an AcornSix system for a total of 96 inputs and 96 outputs. Three different input device voltages can be used: 5 volts, 12 volts and 24 volt. AcornSix and PLCEXP1616 input device voltages are mix and match capable and are selectable via bank of four of inputs at a time with the provided plug-in SIP (Single In-line Pack) resistors. The default input voltage is 24 VDC (no SIP installed).
The PLCEXP1616 has Din Rail mounting holes and Standoff mounting holes to allow the DIY installer a wide variety of mounting possibilities. Requires 24 VDC logic power of at least 1 Amp rating.PLCEXP1616 Spec Manual.
Compatible with:
$45.00
- Emergency Stop Button (#14534) includes:
- 1x E-Stop Button
- Industrial quality reliable Emergency Stop Button with two switches.
- Two contact closures for two estop circuits
- Use just one contact closure or use both
- For use with the Acorn, AcornSix, Allin1dc, Oak, Hickory, and MPU11 CNC control boards.
- Thru Hole Panel Mount
Replacement Parts
$27.00
If you are purchasing a new Acorn kit, you do not need to purchase this item.
The Acorn Relay Board Kit (#14734) Includes:
1x Acorn “8 Relay Module”
1x Ribbon Cable
Tech Support

$120.00 – $360.00
Professional experienced Centroid CNC control engineers will work with you to configure your CNC machine tool.
Centroid Factory Direct Technical Support is provided through Phone, E-mail, and the preferred and most effective method is remote support via TeamViewer.
After Purchasing Technical Support Fill out this Support Request form.
Then, Please call to schedule a one-on-one CNC Tech Support appointment. +1-814-353-9256 press 4. Mon-Fri 9-5 EST
Have your TeamViewer ID and password ready. See this forum post for how to setup Teamviewer.
The CNC Engineer will ask you for detailed Photos of the machine tool and of the control cabinet as photos are worth a thousand words. The best way to provide photos is to post them to a online photo album and send the link to the album to support@centroidcnc.com (Google photos is free and the preferred method.)
Tech Support Time is non-refundable, we will keep track of tech support time used and any unused time will remain in our system for future Tech Support Calls
Centroid Acorn CNC controller reviews
Next, the forum along with YouTube videos are great. Keith, Marty, Gary and Franco not only show how to use the Acorn, but teach general principles about CNC machining. Late last night when I couldn't sleep, I watched a video where Keith showed how to use a vertical mill. The video contained everything that anyone would need to see how to use Centroid products to make their equipment work. Clicking on "Acorn User Videos" from the Acorn page shows a list of videos that show how to use the Acorn. Going on YouTube and searching "Marty CNC" brings up Marty's channel with a comprehensive list of how-to videos. Searching "Gary Campbell CNC" brings up Gary's channel and his expertly produced videos. (Gary and I go back decades to my Shopbot days when I constantly used his advice to solve my problems.) Clicking on "Centroid CNCKeith" brings up Keith's videos. His knowledge and easy-going style should make anyone comfortable in trying an Acorn. One of his videos was with "MecTechMike". Mike's mill and lathe conversions should impress everyone. He surely impressed me and gave me ideas that will take at least a year to try. There are many, many others who have taken the time to post videos showing how they use the Acorn and other Centroid products.
The forum is invaluable. Questions are answered expertly (in most cases). Since I tend to be disruptive in some of my posts (unintentionally - I like to think outside the box and try things that might seem to be controversial), I expected harsh feedback or even censoring, but I've been treated with respect and courtesy. More, importantly, by reading what others are doing, I get ideas that would take a life-time to implement.
Thanks Centroid and thanks to all of you in the Acorn community for your help.