Mk2 user manual
Contents
1. It s recommended that a 100nF capacitor is connected directly across switch terminals The SHIFT key toggles limit options using one of two possible configurations The chosen configuration determines hardware connections Limit switches can be connected in Normal method or Single input method In software you can set this in File Settings Limit If you are using Normal method Single Input feature must be disabled To pause all axes if certain axes limit switch has been activated you enable Lock Other Axes NORMAL Each switch is connected to its own pin LIMIT 1 Axis 1 negative limit LIMIT 2 Axis 1 positive limit LIMIT 3 Axis 2 negative limit LIMIT 4 Axis 2 positive limit LIMIT 5 Axis 3 negative limit LIMIT 6 Axis 3 positive limit LIMIT 7 Axis 4 negative limit LIMIT 8 Axis 4 positive limit SHIFT Toggle Limit switch options GND Ground connections SHIFT OFF Axes 1 to 4 limits are selected SHIFT ON Axes 5 to 8 limits are selected 11 SINGLE INPUT Both axis limit switches are connected to one pin Direction of travel determines if positive or negative switch is triggered LIMIT 1 LIMIT 2 LIMIT 3 LIMIT 4 LIMIT 5 LIMIT 6 LIMIT 7 LIMIT 8 SHIFT GND NOTE If normally open NO type switches are used wiring must be done in parallel method if normally closed NC type switches are used wiring must be done in serial method Axis 1 negative and positive limit Axis 2 neg2. Whether you are connecting limit switches input switches output devices motor drivers or motors etc The shielded cables should be properly maintained and set with insulated ferrules or crimp terminals Picture bellow demonstrates both ends of one shielded cable Shield and GND are connected with ferrule only at that end of the cable which will be later connected to controllers input Other end of the cable which will be connected to limit switch does not have shield and GND connected 30 Shield of the cable should be connected to GND only at the end which is connected to controllers input EB 2 m ai FIN B AXIS 7 s E gt KA w E m Lu n J n n e 3 pe OT ES kasi I DNF no HWA E d H Bi43H SHY 83 31 Table of Contents BEN ere eo qu TEUER THEE HET DER EP 3 iR aa AENEID 3 12 Features and speciicallofiSiamesemre vier yb xia erp Ema dE S OR M Cr UNANG 4 1 9 SVSICR Re CIS MM ELS tastet get stele PA 5 O a ES SS a talaia ec mt site egteitc tems ateeistsdtmlseit ee 6 a N i AA 6 2 2 Mk2 9 axis CNC USB controller description Xa 7 221 MKR AXIS O O ci 8 2 2 2 Mk2 AXES 5 9 CONNSCION padama chute idad 9 223 LIA O A gta giant mala Naa namahala pamana anand katagang 10 224 MKZ EIM CONNGCOIO ra aga an dna Sec bee ce ti n 11 225 MKZOCTIRLCODDSCIO as decet sut anna ele et aaa kae daa died 13 226 WIKZ INPUT aa 14 22 1 MkK2 QUTPUT CONNECTOR
3. Y Axis 3 U Axis 4 V Lathes use Axis 1 Z Axis 2 X Configuration of axes as well as their naming can be set in File Settings Axes CONNECTOR PIN DESCRIPTION 5V 5V power Motor drivers can take power for logic circuit or common anode connection from the USB controller STEP Provides a STEP signal of minimum 12 us pulse width to the motor driver DIR Provides DIR or DIRECTION signal to the motor driver ENABLE Provides an ENABLE signal for motor drivers When the ENABLE signal is lost due to output command E Stop or limit switch activation motor drivers will deactivate A dedicated E Stop switch connected to the CTRL or INPUT connector can control the signal It can also be operated by limit switch activation software command or on shutdown of the control software This arrangement provides a useful safety feature that can be user configured to operate under manual and or computer control GND Ground connections 2 2 2 Mk2 AXES 5 9 connector STEP 5 STEP 6 STEP 7 STEP 8 STEP 9 GND GND GND DIR 5 DIR 6 DIR 7 DIR 8 DIR 9 ENABLE 5V 5V This connector controls up to 5 motor drivers It can also provide an ENABLE signal to motor drivers that can take advantage of these feature CONNECTOR PIN DESCRIPTION 5V STEP 5 9 DIR 5 9 ENABLE GND 5V power Motor drivers can take power for logic circuit or common anode connection from the USB controller Provides a STEP signal of minimum 12 us
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5. can be employed to customize installation to suit user requirement Use of a screw terminal adapter makes connection to the type of drive in the image much easier A DB25 adapter is available for motor drivers requiring this form of input with male or female DB25 connector For maximum flexibility in controller layout a ribbon cable and plug kit is available This aids the construction of longer cables and ensures plug in connections correspond to the USB CNC Controller pin outs IMPORTANT The controller should be powered with an external power supply Mk2 9 Axis controller hardware requires 8 24V DC supply Power supply should be at least 200mA 2 2 Mk2 9 axis CNC USB controller description AXIS 1 4 connectors a pi LI a a Ll a Li i a a b a r1 OUTPUT connector AXIS 5 9 WARE SES EAS BE EXT connector IRMA ee LE II A JS connector E 3 OR RE A imt A 3 LIMIT AS E nap EE connector LA i Se JOG EH ot nr connector INPUT connector CTRL connector ee a USB 2 2 1 Mk2 AXIS connector 5V C GND Z STEP Y DIR ENABLE Each connector controls one motor driver Controller has 4 connectors for axes 1 4 Axes 5 9 use common connector described in next chapter In total this means 9 axes which all can be moved at same time Axes are usually named like this Axis 1 X Axis 2 Y Axis 3 Z On some machines this can be different For example foam cutter uses names such as Axis 1 A Axis 2
6. pulse width for up to 5 motor drivers Provides DIR or DIRECTION signal for up to 5 motor drivers Provides an ENABLE signal to motor drivers The signal can be applied to all axes When the ENABLE signal is lost due to output command E Stop switch or limit switch activation motor drivers sharing the signal will deactivate Ground connections 2 2 3 Mk2 JOG connector JOG 1 JOG 2 JOG 3 JOG 4 JOG 5 JOG 6 JOG 7 JOG 8 GND SHIFT Switched operation of JOG 1 8 controls manual jogging Jogging keyboards can use a SHIFT key allowing Mk2 controller users to jog additional axes or toggle the option of jog step mode SHIFT key function is defined in settings as is the step value for each key press Jogging directions and axis assignment can be defined in settings CONNECTOR PIN DESCRIPTION A typical use might be as below JOG 1 Jog Axis 1 in positive direction JOG 2 Jog Axis 1 in negative direction JOG 3 Jog Axis 2 in positive direction JOG 4 Jog Axis 2 in negative direction JOG 5 Jog Axis 3 in positive direction JOG 6 Jog Axis 3 in negative direction JOG 7 Jog Axis 4 in positive direction JOG 8 Jog Axis 4 in negative direction SHIFT Toggles step jog mode or jogging for additional axes GND Ground connections 10 2 2 4 Mk2 LIMIT connector GND SHIFT LIMIT 1 LIMIT 2 LIMIT 3 LIMIT 4 LIMIT 5 LIMIT 6 LIMIT 7 LIMIT 8 LIMIT 1 8 connects limit switches
7. to provide a jog speed control GND Ground 17 2 2 10 Mk2 USB connector The Mk2 USB CNC controller connects to computer via the USB port The port uses the USB 2 x standard 2 2 11 Mk2 Power terminal The controller should be powered with an external power supply Mk2 9 Axis controller hardware requires 8 24V DC supply Power supply should be at least 200mA 2 2 12 Mk2 LED indicators The user is provided with helpful feedback and live status information via on board LED indicators There are four indicators Power Lights when the controller is powered USB Conn Lights when controller is connected to a USB Port USB Up Lights when USB signal is good Status Blinks to indicate controller function is good 18 3 Connection diagrams 3 1 Wiring of limit switches Mk2 controller has 8 designated limit switch inputs In software you can set which wiring method is used You can use Normal or Single Input method of wiring When Normal method is used each axis limit switch has its designated limit pin When Single input method is used both limit switches are connected to one limit pin Since Mk2 controller does not have screw type connector mounted on the board you can use Planet CNC 16 pin adapter which comes in great help when wiring limit switches Pin description of 16 pin adapter board when connected to Mk2 Limit connector 9 E ESL iu Limit 1 GND Limit 2 GND Limit 3
8. CNC USB Controller Mk2 User manual 2014 10 22 Disclaimer CONTROLLER AND CONTROLLER SOFTWARE ARE PROVIDED TO YOU AS IS WITHOUT WARRANTY THERE IS NO WARRANTY FOR THE CONTROLLER AND CONTROLLER SOFTWARE EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE CONTROLLER OR CONTROLLER SOFTWARE IS WITH YOU SHOULD THE CONTROLLER OR CONTROLLER SOFTWARE PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SERVICING REPAIR OR CORRECTION IN NO EVENT SHALL THE AUTHOR BE LIABLE TO YOU FOR DAMAGES INCLUDING ANY GENERAL SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE CONTROLLER OR CONTROLLER SOFTWARE 1 Introduction 1 1 Overview step Dir Motor Driver USB Controller step Dir Motor Driver The PlanetCNC series of USB CNC motion controllers is link between a personal computer and motor drivers supporting step direction control PlanetCNC series of motion controllers are compatible with most motor drivers The controllers use the USB port available on all modern computers and laptops They can serve as direct replacement or upgrade for many parallel port break out boards OOOO PlanetCNC controllers provide a complete fully integrated software hardware solution Additional machine con
9. GND Limit 4 GND I GND Limit 7 GND Limit 6 c c m o 0 J m t n J N n o 3 dr De ww e a Q E N gt gt J Limit 5 Bellow are wiring plans and pictures that demonstrate wiring of limit switches when Normal or Single input method is used 3 1 1 Normal wiring method NO or NC type switches can be used When NC type switches are used Invert Limit function must be enabled in software Oj o Al 4 i Limit Z Mk2 Limit Connector Oj O e iS ee 2 i Limit Y Limit Y oT so Oj O tit A I r A M Limit X M Limit X Each limit switch is connected to its own input limit pin 20 Normal wiring method of limit switches using Planet CNC 16 pin adapter board Normal input c Be D a XEM ded r IT oe ope eres 7 PAP RN YAAN p c 8 lk wow O IE AE ZA P yag E s a LO a g 9 o RF UI c X gt QJ C V e OUTPUT A SS A at Ow aai Aa 8 m l Li E A Li CI gt t gt Y El A E gt On this picture only for axis one 21 3 1 2 Single input wiring method 3 1 2 1 Parallel wiring of NO type switches Mk2 Limit Connector Limit Y Limit X NC NO NC NO Limit Z Limit Y Limit X NC NO NC NO NC NO 22 Parallel wiring of NO type limit switches using Planet CNC 16 pin adapter board y 2 e Sing
10. ative and positive limit Axis 3 negative and positive limit Axis 4 negative and positive limit Axis 5 negative and positive limit Axis 6 negative and positive limit Axis 7 negative and positive limit Axis 8 negative and positive limit Axis 9 negative and positive limit Ground connections Software Invert options allow use of normally closed or normally open switch hardware This feature can be set in File Settings Limit Invert 12 2 2 5 Mk2 CTRL connector GND CTRL 1 CTRL 2 CTRL 3 CTRL 4 CTRL 5 CTRL 6 CTRL 7 CTRL 8 This connector provides inputs for use of MPG pendant devices and E Stop Spindle speed encoder for spindle synchronization can also be connected GND pins provide Ground or common connections An E Stop switch attached to this connector can be configured in software to activate deactivate E Stop E Stop switch hardware for use with this connector can be NC Normally Closed or NO Normally Open If NC is used Invert feature must be enabled in settings Locking switch is recommended CONNECTOR PIN DESCRIPTION CTRL 1 CTRL 2 CTRL 3 CTRL 4 CTRL 5 CTRL 6 CTRL 7 CTRL 8 GND E Stop MD1 Mode switch MD2 Mode switch Axis switch Axis switch Encoder for MPG Encoder for MPG Index signal for spindle synchronization or manual boot loader Ground connections 13 2 2 6 Mk2 INPUT connector GND This connector provides input for user assigned func
11. cting motor driver to Mk2 controller Wiring diagrams for COMMON CATHODE and COMMON ANODE connection of motor driver COMMON CATHODE 45V Mot connected ENABLE B Be d Z p GND Power supply GND A Stepper motor A Driver Controller 2 Common anode COMMON ANODE 5VEXT jumpermust 4 5Y be connected GND Not connected a I V Power supply GND A Stepper motor i Driver Controller STEP input on motor drivers can be also labeled as PUL or CLK 27 Picture bellow demonstrates the connection of 2 5A Motor driver to Mk2 controller and connection of stepper motor and power supply to 2 5A motor driver Since this motor driver uses 10 pin header and ribbon cable connection is pretty much trivial Picture bellow demonstrates connection of motor driver to Mk2 controller with screw type adapter and connection of controllers external power supply n x i E AL Bs R LE j i 3 El TT all UL r An x E TM F a UL a 2 qc SONA IT BRS 3 DIR 385 ERT BE J NND p 3 a t 2 TM A 8 cad p p gt es Ni fa 3 Pa ao c oo 4 m m Ll X0 aai 4 o0 25833484 bi 00 00 00 NEST D YN uS ING jee ANC e 9o C O eaushine le igital stepping Drive AM882 29 3 4 Shielded cables We always recommend the use of shielded cables for wiring
12. ers kit is available works on MacOS with virtual machine emulating Windows 9 axes USB CNC controller 9 axes controller for stepper and servo motors USB connection 100 kHz maximum step frequency 12 us minimum pulse width 5096 duty cycle at higher frequencies 7 digital outputs on board jogging keyboard support 8 limit switches with shift feature 5 inputs MPG pendant support spindle encoder and index signal support for spindle synchronization SD card support for running g code without computer control external devices with I2C and UART protocol homing procedure tool change procedure tool length sensor support sensor for capturing and measuring digitizing probe support transformation matrix soft limits Slave axes backlash compensation API 1 3 System Requirements Minimum system requirements 1 GHz or faster processor 512MB RAM 500 MB available hard disk space Graphics with OpenGL support USB 2 0 port NET Framework 3 5 SP1 Recommended system requirements 2 GHz or faster processor 2GB RAM 500 MB available hard disk space Graphics with OpenGL support USB 2 0 port NET Framework 3 5 SP1 2 Hardware 2 1 Installation Installation of PlanetCNC CNC USB Controller requires a USB equipped PC or laptop along with motor drivers appropriate to the motors in use The USB CNC controller is compatible with the vast majority of motor drivers that use step direction signals Optional support hardware
13. le input os E o ka 4 br in r Oli 5545433 NP n 11 banda ys NG m ne Y ds IN FRR gt xa OY TEET p Tos ar cs POWER prom 5 Ki P lugar 2 k 21 ins NG 5 WSB CO 4845344 mg a Ay NN aos ipa d Len ue gt A TT EET E rai me LES 7 APR PAN FELTET Er 6 R pos ZU eub TS i 3 LU EE 4 x e gt E LE LIE C o TING ih ra nu It c o s ide gt UG pe CK x Se Es E das Z AT i ud sn Ll s ER ET Av EP EBENE On this picture only for axis one 23 3 1 2 2 Serial wiring of NC type limit switches Mk2 Limit Connector Limit Y Limit Z 24 Serial wiring of NC type limit switches using Planet CNC 16 pin adapter board M Ee NS Single input Serial method NC switches NOE E d H min Lu Li Is Jia E V ABI A AXIS 4 On this picture only for axis one 25 3 2 Wiring inputs of Mk2 controller Mk2 has 5 designated inputs for Start Pause Stop E Stop and Tool Sensor Bellow is wiring diagram of tool sensor and Mk2 controller using Planet CNC 10 pin adapter board Pin description of 10 pin adapter board when connected to Mk2 Input connector IIIIIIIII UN UY i Pause GND GND Tool Sensor Start GND GND E Stop Stop GND MK2 Input connector Pause switch Start switch Stop switch E Stop switch Tool Sensor switch 26 3 3 Conne
14. tions INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 CONNECTOR PIN DESCRIPTION INPUT1 INPUT2 INPUT3 INPUT4 INPUTS GND Pause Start Stop E Stop Tool sensor Ground connections 2 2 7 Mk2 OUTPUT connector OUT 2 OUT 1 OUT 4 OUT 3 OUT 6 OUT 5 GND OUT 7 GND 5V This connector provides 7 digital outputs for control of external devices The optional Output board links to the Mk2 controller using this connector Output assignment is controlled in software CONNECTOR PIN DESCRIPTION OUT 1 7 Digital Output GND Ground connections 5V 5V supply OUT is capable of generating UART signal 2 2 8 Mk2 EXT connector SDMIS SDMOSI SDSSEL SDSCK I2C CL I2C DA GND 3 3V GND 5V This connector allows use of SD Card with Planet CNC SD card adapter and I2C protocol devices An inexpensive I2C LCD digital readout has been successfully prototyped tested and documented CONNECTOR PIN DESCRIPTION SDMISO Signal SDMOSI Signal SDSSEL Signal SDSCK Signal I2C CL Signal I2C DA Signal 3 3V 3 3V supply GND Ground connections 5V 5 0V supply 2 2 9 Mk2 POT connector 3 3V POT GND potentiometer attached to this connector provides a manual jog speed control when using jogging keyboard connected to JOG connector CONNECTOR PIN DESCRIPTION 3 3V 3 3V power supply for use with potentiometers POT Sk or 10k ohm logarithmic taper potentiometer can be connected
15. trol software is NOT required The USB CNC Controller software is a dedicated application designed to fully exploit the features of the purpose built hardware It has many advanced features to assist day to day CNC machine operation 1 2 Features and specifications USB V2 x from PC Laptop running Windows XP Vista Windows 7 8 or 8 1 32 bit or 64bit motor driver connector pin out is compatible with 10 pin open source interface Linistepper PICStep controller works with most step dir stepper and servo motor drivers available on the market buffered IO for maximum performance advanced interpolation algorithms start stop pause and resume execution of program on your machine standard RS274 NGC G code EMC2 and LinuxCNC compatible advanced G codes G40 G41 G42 Cutter Radius Compensation supported advanced G codes G43 G49 Tool Length Offsets supported advanced G codes G54 G59 3 Coordinate System Origins supported tested with SolidCAM MasterCAM ArtCAM Vectric CamBam MeshCAM generated G code Profili 4 axes and 3 axes G code supported import toolpath from DXF files import toolpath from PLT HPGL files import toolpath from image files import toolpath from NC Drill Excellon files import toolpath from Gerber RS 274X files toolpath simulation automatic homing procedure advanced toolchange procedures automatic tool length measuring export toolpath to G code export toolpath to DXF SDK software develop
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