Mach3 missing steps

Mach3 missing steps DEFAULT

Y axis stalling / missing steps

From email:

Question for you. How do you know when a stepper motor is bad? I have been having a horrible time with my Y axis losing its zero reference while cutting a project. I spent quite a bit of time trying to isolate the problem and thought I had it narrowed down to Mach3 and/or my computer. I replaced my computer, reinstalled Mach3, and spent several days tweaking the motor tuning to what the Mach3 tech support staff told me to do and I am still having the problem.

There are a lot of things that can cause this. I suggest you read the FAQ Missing steps – motor not behaving properly. There are many diagnostic steps you can take.

I have also noticed that when I am moving the Y axis from front to back it freezes on me in several locations when moving it at 100ipm. However, it runs fine from back to front at that same speed. I have never had a problem with this in the past. I have also taken the machine apart and checked that there was no mechanical binding the entire range of the Y axis in both directions.

Slow down the Z axis to 50IPM (or 20 or 10). Slow down the acceleration. Run some tests. If OK at slower speeds – start bumping up the speed. Is your power supply doing it’s job?

Thoughts?

If you think the problem is a stepper motor I will be happy to buy some replacement units from you.

I’m happy to sell you one, but I’m not convinced it’s the motor.

Thanks again,

Craig

Sours: https://hobbycnc.com/forums/topic/y-axis-stalling-missing-steps/

How Do I Fix It?

The spouse has taken the kids for an afternoon getaway with the inlaws. The dog is fast asleep on the couch and your boss has promised not to bother you for the weekend. Here it is, that once in a blue moon opportunity to finally fire up that Multi-Function CNC machine and start creating! You can hardly contain your excitement as you run to the garage, USB in hand ready to change the world with your new design! The Z-Axis sings its sweet song as it moves for the first time in ages, followed swiftly by the X and Y. The clamps are tightened and anxiously awaiting the buzz of the spindle on the freshly planed baltic birch. This is it! The sun gleams through the window and a rainbow suddenly shoots across the room as you do it! "Cycle Start". Birds are singing and you can just about see a coconut drink on its way. Then ... it happens. Somewhere, someway, somehow your machine has decided that it wanted to cut an inch and a half to the left of where it was instructed. Ecstasy shattered. Your machine has experienced the dreaded ... loss of steps.

My name is Greg and as the Support Manager here at Stepcraft, I know firsthand how frustrating and debilitating it can be to exprience losing steps on your CNC machine. That is why I am here to tell you ... DON'T PANIC! In this article I will share with you the reasons you may be losing steps and the keys to getting back up in running in no time!

What is Losing Steps?

 Most modern day CNC machines are powered on each axis by Stepper Motors. In the most basic of terms, these are very powerful motors that constantly "count" the steps they take as they turn. Step 1, Step 2, Step 3, Step 4, etc. The important thing to note is that there are no feedback loops on these motors, or anything that tells the motor what is actually happening vs. what is was told to do. If the motor was instructed to go to position X, which may be 6 steps, it will travel until it has counted 6 steps. Because there is no active feedback, if something happens along the way that physically stops the motor from moving, the software is still counting Step 5, Step 6, when in reality it may be PHYSICALLY STUCK on Step 3. Now, the software "thinks" it has reached Step 6, or Position X when in reality it is still back on Step 3, never having reached Position X. Because the software "thinks" it is at one position, it will carry out the G Code from that position, never "knowing" that it is actually at another position. This is what is called Losing Steps and it stinks. The major signs that you have lost steps are ...

Shift in Project Position

Your project may appear to have shifted to the left, right, up or down


Z-Axis Cutting Too Deep

The Z-Axis is cutting deeper than instructed 


Small Lips or Ridges 

Noticible ridges around the outline of vectors


Deep Cut Directly Across Project

Related to the Z-Axis, if too low during rapid transits it may leave a gauge across your project

Not Cutting All the Way Through

Depth of cuts not even close to what was instructed 


Project Running out of Bounds

Running into limit switches or out of the bounds of your project 

When we experience losing steps, especially for the first time, our minds tend to take a trip down panic lane as they spin with the "whys" and "what ifs". When we break it down, there are really only two main reasons why our machines lose steps ...

Electromagnetic Interference (EMI)

Rare in comparison, but can be even more frustrating. This can be the silent killer as you can not see and hear this like you can when there is a mechanical impediment. This can occur when a machine is 100% free to travel with no mechanical impediments and still appears to lose steps. One of the major signs of this is the randomness of occurances. Any machine controller, such as the UC100 on a STEPCRAFT machine, can be susceptible to EMI from power sources such as power supplies and shop vacuums.

Mechanical Impediment

By far the most common reason for losing steps. This occurs when something (which we will discuss below) physically stops or prevents the axis from moving forward. The subcatagories for this can be vast, but just remember the reason you are losing steps is because the axis can not travel without impediment. Factors that contribute to mechanical impediment can include alignment, dirt and grime, grease, obstructions and feeds and speeds.

The Only Part You (Probably) Care About

EMI Solutions

Stay Away From the UC100

The UC100 is the grey dongle that plugs into the back of your Stepcraft and runs to your computer VIA USB. This is what interprets and runs the G-Code on your machine and is vulnerable to to EMI. Make sure anything that is electrically charged is as far away from the UC100 as possible (usually 5-10 feet is safe). The major things to consider include power supplies, shop vacs, dust collection systems, and anything else that can throw off static electricity.


Use That Green Cable

Every Stepcraft machine comes with a green grounding cable that can be attached anywhere on the machine, but normally goes on one of the two screws holding the bottom plate on. Make sure your machine is grounded using this cable that plugs into the wall or your power strip. This can help the buildup of static electricity and discharge

Consider Using Ferrites

Ferrites are non-conductive insulators that help to prevent electrical noise from entering equiptment. In this case, these are the "beads" you see on laptop and other electrical cables. Available from Stepcraft or online, these low cost snap on devices can be applied to the USB cord going from the UC100 to your computer and can help prevent stubborn EMI issues. 


Mechanical Solutions

100% Jog Speed, 100% Travel

The very first thing to check after losing steps would be your machines mechanical alignment. The goal is to jog your machine at 100% jog speed the full length of each axis. Even if your machine was working perfectly, you may find it binds up towards the ends and needs readjustment. The following videos will walk you through the adjustment process. 

                Y-Axis Alignment -https://youtu.be/KDuogPSI5tw

                Z-Axis Alignment - https://youtu.be/kUG12Z-Lndo

Clean and Re-Grease the Axis

Regular cleaning should be done every 20 hours or so, depending on the material and dust colletion system you are using. If you notice the machine binding in the same spot, this may be a hint that it is time to clean each axis and apply a small amount of re-grease. The following maintenance video will walk you through this process. 

                Maintenance - https://youtu.be/IIYcZ9M20nU

When All Else Fails ...

DON'T PANIC

When you purchased your STEPCRAFT machine, you also received a lifetime membership to the best support community in the business! Feel free to reach out to other owners VIA the STEPCRAFT Crafters club on Facebook, give us a call at (203) 556 -1856 or email us at [email protected] Our team here at STEPCRAFT has experienced it all and are more than happy to help you through the frustration of losing steps.

Sours: https://www.stepcraft.us/blog/stepcraft-blog-6/post/my-machine-has-lost-it-s-mind-the-science-behind-losing-steps-and-how-to-get-back-to-work-quickly-13
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Leo wrote:You are missing steps while cutting air?

That certainly sounds like there is resistance in that one particular slide.
Just the machine motion is skipping steps.

I still do not know how you are determining that you are loosing steps.

Leo, I am saying it is missing steps because I don't know what else if anything it could be. I set the machine to the corner of the workpiece & zero all 3 axis, I then raise the z axis by 10mm & zero the z axis again. Run the job & on completion the machine will be sitting at x zero, y zero z at the safe height above material. Lower the z to zero plus the 10mm I initially raised it should give me my original starting position.
x & z axis are fine but the y axis has moved from it's original zero position. Faster I run the machine the further away from this position it gets but no matter how much I slow things down I can't seem to get it to the original zero point.
With no power on the machine I can move the spindle left & right along the gantry with no problem at all so don't think it is binding at all. With power on the machine I couldn't move it so thought the holding torque was ok, although I must admit I didn't try to move it to hard.
Sours: https://forum.vectric.com/viewtopic.php?t=17654
An Aid for Troubleshooting Missed Steps

Mach3 missing steps

04606: mach3, cobram3: Missing and/or corrupted graphics. exe process. This prevents following errors from accumulating. Missing Steps - weak motor? Question 2. You can't find missing steps by looking at the electrical. I just bought a Chinese 3040Z-DQ 230W Four Axis Ball Screw CNC and followed the instruction from the manual to configure the machine with Mach3. Debris on rail tube surfaces. 11) spindle speed is 18,000 and feed is from 100 ipm to 150 ipm with depth of cut 0. it has not missed yet but we have only done one cut. I'm having an issue where the machine is losing steps while running toolpath and ruining my workpiece. Fully support all Mach3 version Support save data when power off. Take a screen shot, a picture or on a piece of paper, write down the Port Number, Pin Number, and the Active Low state that is currently being used for all of your motors. "Rich's Guide to Mach3 Threading" is an excellent manual that discusses the process of cutting threads in great detail. Excessive friction between lead screws and lead nuts. It is better to use multiple smaller cuts. I also have your foam cutting board and like all your products has If I recall correctly, the Mach 3 software is generating pulses out of a printer port that tells the stepper driver when to step. Notes. Sep 10, 2009 · 4 Hit the RUN and be ready to turn off the torch with the screen button as soon as it get to the start of the cut where you need to pick up the line. exe". When you open Mach3, ensure the "Reset" button is not engaged. 5 mm = 1600 steps / mm If your travel for one revolution is not 0. I suspect that this is the case since two different sized motors seem to have the same speed limit. I know the tool path is right, I have checked it multiple times in sim and the step loss seems to be random. Try turning off the toolpath in Mach3 and see if it makes any difference. Jan 11, 2010 · Good question. Write the current settings down so you can always come back to them if needed. The numbers representing the current position are adjusted in the absence of any axis motion if any of several events take place: Length units are changed (but see Warning above) Tool length offset is changed Feb 01, 2018 · Effectively a drive-by-wire technology applied to a mill. Tap to unmute. Full steps = number of steps with microstepping set to 0 or none. Jun 06, 2015 · I apologize if this is a bit of a repeat. I lose 0. Just go to the Config menu and select "General Config". On my machine, both the emergency stop and the program stop functions work with the Smooth Stepper board. tap file. It is not Description:Ethernet MACH3 interface board three-axis control, NVEM CNC controller NOVUSUN Specification:Type: MACH3 Motion ControllerAxle: 5 AxisQuantity: 1pc Features:1. If the acceleration is too high, you will get "chattering" on your stepper motors. Now, the software "thinks" it has reached Step 6, or Position X when in reality it is still back on Step 3, never having reached Position X. Info. and Z words are all missing Jul 29, 2021 · Mach-3 was assigned to the joint Guardian / UNECOM Space Fortress as it was commissioned. Your machine isn't executing the G code correctly. The step and direction terminals on the Mach3 USB controller are the terminals labeled XP, XD, YP, YD, ZP, ZD, AP and AD. I unhooked the screw from the motor, reset everything and ran the program again. Changing the list of jog step increments is easy. If there is no change to the link indicator light check the plugin file is in the Mach3 folder. -16 general-purpose input,8 output has speed function,the spindle actural speed Mach3Position Loss. wait for few seconds, then after the process list appears scroll down to find mach3. May 07, 2017 · If one axis is ‘misbehaving’ (not spinning, missing steps), then you need to isolate the issue. 3966 steps per inch, which I arrived at using an online calculator, comparing The closed loop feature accounts for any missing steps during transmission, and will automatically apply the necessary position correction at the start of the next move. If the card worked with any other software it would be a good buy but it does not. 125" to 0. Not sure if it is a Mach3 issue or a driver/stepper issue. Change . (Copy and paste from the terminal window in a text editor is the easy way) Nov 21, 2017 · 10) the jobs start and finish as designed in Fusion 360, no interruption or appearance of missing steps and being off from that point forward. This will also give me a DRO though Mach3 screen (the mill doesn't have real DRO). Two Quick Clamps. You will need: A yard stick. There are a lot of things that can cause this. Description. Just do this for Z, if the other two axes are OK. Status indicator LED can be useful to show the USB Connection,and working status by flashing. The driver for the stepper motor allows you to increase the number of steps per revolution by adding a specified number of steps between each step. If playback doesn't begin shortly, try restarting your device. . I suggest you Google "z axis missing steps mach 3" and work your way through one of the many videos or articles that turns up. Step 3: CNC Fabrication and Final Assembly With the g-code that we generated with CamBam, we are able to run the CNC machine with Mach3. I gave up on the Mach 3 backlash function before I got the smooth stepper board, and I have no experience with the other issues you mentioned. Jul 23, 2013 · If lowering the number of microsteps results in the ability to travel faster without missing steps, then you can be sure that the limit lies with Mach 3. What’s specifically missing so far are branching structures–IF, GOTO, and WHILE loops. The computer is just a little too wimpy for mach. I am not familiar with the Shark controller but it is fairly easy in Mach3 to do the motor tuning. Run Asmwsoft Pc Optimizer application. Can you please give me a sequence of things to learn and do to master this CNC stuff. 00 for a outdated Mach3. I started testing the machine with simple X Y Z commands using Mach3 and my keyboard and noticed some really rough noise Chinese mach3 6040 and fusion 360. this will give you the Signal. So I had to configure my Y axis parameter for 4 steps and rest axis for 32 steps which is awkward. Sensor3). Mach3, the link indicator light will come on, after closing Mach3 link light will go off. Repeat steps 1, 2, and 3 until the Z position is reached at step 1. Parameters marked with blue circles are used by both buttons. I'm not sure if you are referring to me, but I was not asking about Mach3. The ram is affecting things too. I suggest you read the FAQ Missing steps - motor not behaving properly. The EC300 Motion Controller is among the quality ones that are perfect to connect with Mach 3 software. In other words, Mach3 tells the stepper controller to move a certain number of steps but the stepper does not. It comes with the required set of programming, so you will not have to worry about fixing it up from the scratch. 1. Universal Gcode sender can do pretty much the same thing, but with fewer bells and whistles. The numbers representing the current position are adjusted in the absence of any axis motion if any of several events take place: Length units are changed (but see Warning above) Tool length offset is changedbehaviour of other plugins, missing steps. RATTM Motor CNC Engraving Machine Controller Board. The KFlop requires a full encoder for spindle syncronisation, and does so very well. Do a very careful visual inspection of PC board starting at the screw terminals and working 'inward'. :( maybe What I did to eliminate the Oct 16, 2020 · b) there is a routine in Mach3 that will help you calibrate, or you can do some controlled moves, entering the step value manually 2. I suggest you Google “z axis missing steps mach 3” and work your way through one of the many videos or articles that turns up. Throughout all of this, make sure you are consistent in using inches or mm in your cam software, mach3 and linux. I have it wired to the machine and the G540. Jul 09, 2021 · Missing information for Mach3 settings. The easiest way to describe the issue is when cutting a circle. It's more to do with the Controller issuing the step pulse on the rising edge and the drive set to process it on the falling edge there becomes a timing issue so when a direction change occurs the step is in front of the Dir and a step or MS is lost on each change of direction. Enter the parameters in the Probe Wizard, the parameters used by each button are highlighted in the figure. I setup easel to cut a 3" circle outline clear through 1/2" birch ply with a 1/16 bit (from the starter set). 5 mm, then plug in your travel distance instead. When add dial indicator to the axe after some movements . exe process file then click the right mouse button then from the list select "Add to the block list". Custom 4th Axis: If you selected "Other" for the 4th Axis option, you will be able to specify the parameters listed below for motor tuning. Makes a noise like a mad German Shepherd an Bridgeport Boss missing steps, I have parts to make! halrun loadrt stepgen cmd_type=v step_type=2 show pin show param exit And make a note of the pins and params of the velocity/quadrature mode stepgen. Aug 08, 2013 · We seem to only be missing steps on X axis, so thisafternoon we swapped the x and y driver boards around. The G540 is a stepper drive unit, which is a stage beyond the Mach 3 -> parallel port interface where you are having problems (unless it is actually related to the drive units). exe process file then click the right mouse button then from the list select Mar 27, 2013 · The controlled point is always at some location called the "current position" and Mach3 always knows where that is. The first pass looks great and then the second pass is pushed to the right about 1/2 the bit width. Support spindle speed feedback Support 3 meter USB cable Maximum step-pulse frequency is 2000KHz. 2. Mach3's Menu -> Plugin Control -> Main Config: ESS-M3-version The ESS has a fixed amount of memory, and the controller frequency is a setting for how many motion positions per second there are, or how many times each second the velocity is sent from Mach 3 to the ESS. 1) Laptops are not supported with Mach3 when using the parallel port. Note, on the 8825 driver board the decay mode is left open placing the driver in Mixed Decay. Contactless delivery and your first delivery is free! Start shopping with Instacart now to get products, on-demand. encoder_0. The 3 axis CNC controller by Rattm motors is one of the finest machines in the market for beginners due to its ease of usage. 5 download of the Mach3 program and config, and that was my starting point. a) A few things come to mind that might cause this: Dec 11, 2014 · When I run this program at full tilt it runs all three axes smoothly in both directions apparently without missing a step. It has happened 3 times on 2 different days, on 3 different toolpaths. 2, with 12 programmable iDidn't notice this before but that 320 steps per revolution looks wrong! From your ebay link there is a close up of the stepper motor label that clearly shows 1. I instead will save settings and jump back into Mach 3 and then job the axis. "Steps per", "Velocity" and "Acceleration". If the motor was instructed to go to position X, which may be 6 steps, it will travel until it has counted 6 steps. now if I go to MDI I can tell it to move 90 degrees and it's died on. The parallel ports on Acer and Asus motherboards are not great, I have tried both of them and know. At 10560 steps per inch and 70 IPM, you might be reaching the limit of Mach 3's ability to produce evenly spaced pulses, resulting in missed steps. I am in the process of installing the Proma THC. I suggest you read the FAQ Missing steps – motor not behaving properly. : 5. First Time CNC Help? I bulit me a small 3 axis cnc router from a plan off of instuctionables and it runs fine but it trys to cut everything super small. The parallel port has been discontinued on PC's for several years now. Do a very careful visual inspection of PC board starting at the screw terminals and working ‘inward’. It was mainly used to connect a PC to a printer. If the numbers are different, then your motors are stalling and missing steps. The problem im experiencing is that. Skipping or Missing Steps. The version of Mach 3 they give you is the Demo version, and will only process 100 or so moves. Details. exe file you want to delete or stop. what is was told to do. My factory CD was corrupted or worthless and didn’t work on a Windows 7 machine. For a 1. I am Using the cutmaster 42 with the Proma 150 THC and the Gecko G540. 2 STEPS PER UNIT VALUE – USING MACH MILL 3. so here's my issue when you jog the the 4th axis it will go cw for a few times then ccw the next. Applying Slippage Marks to your lead screws. Dial Indicator Indicator base. Better Macros and Subprograms: Fanuc Macro B vs Mach3 vs LinuxCNC. The STEP signal is an ACTIVE HIGH (+,1) signal. Go into Mach3 and use the Set Steps Per Unit button to do the calculations for you. DominicASP (Materials) (OP) 27 Feb 15 17:22. Dec 16, 2014 · 1. The motor are all wired with good quality 4 wire shielded cable, the shielding is grounded on the cnc shield ground, I made it that way because I've seen lots of post about unshielded cable causing missing/unwanted steps because of induction in the wire causing interferance with the stepper driver. Mach3 will not add automaticaly any choice for Port Num. The correct setting in Mach 3 on the old controller, in inches, was 3392. 1 mm linear accuracy for 1-2 and more hours will be about 5 mm . First Tip How to Stop mach3. By definition, the steps energized the coils. Set Kernel speed for 25000 Hz. Mach3 does not tell you if the PC has bad latency and misses steps. This is especially true since I got the idea from Hoss to set up Mach3 to include a half thou (0. 8 and the degrees sign. In addition, the DROs on Mach4 will show the actual machine position instead of just a step counter. Check Price. ; click the mach3. Then from main window select "Process Manager" item. Connecting/disconnecting steppers with voltage on the board is an excellent way to blow a driver chip. Good question. There are many diagnostic steps you can take. - No mater how hard i tried i was not able to get it to reliably work at 1/8 step. Mach3 was designed to use this port to send the step, direction pulse to the CNC controller and receive some inputs such as limit switches. Best regards, WesI replaced my computer, reinstalled Mach3, and spent several days tweaking the motor tuning to what the Mach3 tech support staff told me to do and I am still having the problem. I am not sure what you are saying about the speed as that is set in the fly out manual screen in Mach3. While doing this all motors sound extremely smooth and have a consistent hum to them. The parallel port driver included with Mach3 will only work with 32-bit DESKTOP computers with. Mach3 will move that axis at a distance that is determined by the existing steps per unit value set in the motor tuning dialog box (config menu -> motor tuning). Jun 24, 2013 · Mach3 depends on the exact number of steps in order to keep track of where the axis is. This is exactly equivalent to swapping the wires between CSMIO and the driver. Threw the card in the junk bin. In both Mach 3 and Cobra Command Laserdisc games, the graphic parts of the emulation are missing or corrupted to the point to make it impossible to play. You could try to rise the com port speed (on your computer and on VFD) BUT!! Pay attention to have shielded wire between vfd and spindle. 03125″, feed rate 24″ per minute, step over 75 percent of tool diameter, and spindle speed at 5000 rpm ). 4. Mach3, the link indicator light will come on, after closing Mach3 link light will go off. Both of these are combining to give you your poor performance. CNC Controller: Software, Drivers, & Boards [Complete DIY Guide] The CNC Controller or CNC Control is the package of electronics and software that take input either from g-code or the cnc control panel and converts it to the signals the CNC machine’s motors need to move the CNC axes. Before load the gcode on the mach3 software i zeroed all the axis at the same There is an option to set the maximum step output kernel frequency. If you see the stepper motors struggling, or if they are missing steps, lower the feed rates (and or depth of cut). If the motor missed the step it is because it couldn't keep up due to either mechanical load or RPM. 0 TESTING YOUR LATHE 3. When it get about 3/8 from the break, turn on the torch with the screen button. Disconnect your controller Jan 01, 2017 · The “Y” axis is skipping, stalling, losing steps. The problem could be: Before touching ANY of the stepper motor wiring – ensure there is 0. Say you set the microstepping to be 1/4 on the stepper motor driver and your stepper motor has Again even at low speed it lost steps. In Mach3 -> Menu -> Config -> Ports and Pins -> Motors. e 1 or 2 jumpers only. The Gillette Mach3 razors for men have stronger-than-steel blades stay sharper longer (vs. CNC Router is missing steps. All the stepper motor settings are shown as 0 for all the steps pins and all the dir pins. ; Then from main window select "Process Manager" item. MACH3 is a combined GRBL and UGS. I have found a Compaq deskto PC with Win 7 32 bit and a parallel port. I did not use a breakout board. On the same screen you have a "Cycle Jog Step" button that shows how far the axis will move for each input. Insert the probe into the spindle. There are three main settings you need to set for each motor. 5 mm = 800 steps / 0. (I left Step and Dir at 0,0 for all except Spindle that was 1,0 and checked active low for Dir and Step. The z-axis 'grinds' and i'm losing steps so the Z0 is not at the same height anymore and therefter the tool digs in deeper than it should making the b) there is a routine in Mach3 that will help you calibrate, or you can do some controlled moves, entering the step value manually 2. On the top line of the G-code it will have the name of the file used, you may be loading the wrong file into Mach, the next line states the Post processor used Notes. May 14, 2018 · I replaced my computer, reinstalled Mach3, and spent several days tweaking the motor tuning to what the Mach3 tech support staff told me to do and I am still having the problem. Max, KMotionCNC is Dynomotion's frontend for the KFlop. e when m0,m1,m2 is inserted. The STEP signal should be valid for 2 microseconds (uS) or more. My steppers are controlled through a Gecko 540. Post by Richard Bates » Tue Jun 08, 2010 11:17 pm. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators Sep 15, 2015 · Get an external motion controller. To check this, run another part and watch the stepper motors while it runs. Sep 13, 2015 · This is as losing steps . I am using Mach3 and Sheetcam. Cheap Motor Driver, Buy Quality Home Improvement Directly from China Suppliers:4 Axis MACH3 Ethernet CNC Motion Control Card NVEM 200KHZ for Stepper Motor Servo motor Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. I have found that when you go into the motor tunning area every thing works the same except that when you job the motor speed doesn't update every time. Feb 20, 2015 · Just another step you can look at to make sure the problem exist only with the controller software, is to run the file with no cutter installed, making sure you are only cutting air. I have a home build CNC Plasma. There are three main acceleration settings. Axis motion is hindered - It might be that the depth of cut is too deep and requires more power than the steppers can Mar 18, 2013 · If the missing steps remain after this build, logic tells me I should start looking at the G540 controller. My Mach3 5 axis controller board came today and although there was a lot of documentation supplied with it, there was not enough to setup the board properly. Control up to 6 stepper motors at the same time. 3 AXIS TESTS 3. It is located in the Mach3 folder on your harddrive and is called "drivertest. If you are milling off an entire top surface, each pass should be 1/3 to 1/2 of the cutter diameter (1/3 is better). Toolsetter should be installed permanently on the edge of the desktop. Would like to test the system first, so that all the step motors and spindle are working, but not sure how to do that either. tell it to return to A0 and it's died on but tell it to go A20 , A0, A30, A15, A0 A 45 and who knows where it 10-08-2014, 05:20 PM. You could check this is a noise problem by unplugging the spindle from the vfd. Having it output data faster means that if can buffer less data. 5 amp nema 23 I was able to get it to do 2500 mm/min with an acceleration of 300 at a 1/2 step frequency with 100 steps per mm. 4 X & Z AXIS TESTS Z AXIS TEST AXIS LOADING TEST X AXIS TEST 3. Mach3 is a great piece of software, but you'll have to have the full functioning version that allows unlimited lines. Mach3 will run on any Windows OS from Windows 2000 through Windows 8. "Steps per" is the number of steps per inch, which is the number of steps the motor needs to turn in order to move the CNC one inch. 08-08-2013, 07:00 AM #17 Feb 25, 2017 · Mach3 wants the driver to operate on a rising edge of a pulse but if the signal is inverted, it's triggering on the falling edge instead. Jan 19, 2017 · On my big router I have Mach3, ethernet Smooth Stepper, and a C22 board from CNC4PC that connects to the MPG. Jan 30, 2020 · I have found a Compaq deskto PC with Win 7 32 bit and a parallel port. ) looking for 3/8 see my previous question. Applying Slippage Marks to your lead screws. Machine missing steps during pocket milling 4 messages I am running Mach 4 on windows 10 with a smooth stepper. - Configure this according to MACH3 instructions - in the motor tuning first select a speed/acceleration that works. By unplugging itQuestion #: 14482 Question: On Mach3 USB the port number is 3 but i dont see the motor output pin numbers for the stepper side? could you please provide this for me? maybe a sketch of all the pin numbers the way Mach 3 sees them? Current Solution. I am about to download free Mach3. This one is a 2D Contour profile. The amount of ram is a problem too. In Mach3 -> Menu -> Config -> Motor Tuning, record the Steps Per, Velocity and Acceleration values for each of your axes. I'm only losing steps in the x axis. I am using the demo of mach3 with the mm unit settings and every time I try to run the roadrunner gcode it flies to the end of the table and just sits there with the motors going nut. 5. Any changes to the axis choice and step size choice are sent to the computer only when the side switch is pushed. What causes the missed steps. OK jog and poor gcode are a sure sign of the processor being too slow. Summary. click the mach3. I was forced to used older PC machines with Bios that may or may not allow the port to function properly. 0005″) step size. (CNC Software Part 2) - S03E14 Mach3 CNC Tutorial 03 using mach3 Premier Plasma CNC Mach 3 Controller (Easy Option) Mach3 Manual Tool. I bought a china controller with 3 nema 23 motors and 1 nema 17 motor. Re: Count stepper motor steps. Same results as before, lost steps. Axis Type: Select if this is a linear or rotary axis. That pattern continues on About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators May 24, 2013 · It will walk you step by step through the process. When the machine is finished cutting out all the parts, we break the holding tabs using an oscillating multi-tool, and then shave them off using a table router. Mach3 CNC Control software, CNC tutorials. This actually may have been changed on the last plug-in but I am now used to it. Have been running programs for 4 months, Machine just started missing steps during the final portion of a pocket mill. 10 of the printerport is activated if the side button is pressed, if pin 2&3 of JP1 are connected , if pin 1&2 is connected then pin 10 is a normal input, when pin 1&2 are connected input 10 can not be used for other purposesStep 5: Mach3 Side 2 In Mach 3 go to top menu->setup serial modbus controll and in popup window press test modbus. : but this will be the same port you have seen in the modbus tester application so if it was showing Com5 write in Port Num. If fact, this is the rotating spindle which produces noises. The quick fix is to go into "ports and pins" in Mach3 and swap the step signal for the Z axis to active low. Adding to this, there is an Ethernet interface. I was asking about the Arduino program you mention in Reply #9. If you have a PC with a parallel port, you can wire them directly to that port or use a cheap BOB (Break Out Board) that costs from 5 to 15$, or if you do not have a parallel If this is the case, in mach 3 go to the config menu, motor tuning, and copy the step, velocity and acceleration values for each axis. Both rail tubes should be wiped down clean with a dry cloth before and after cutting to prevent the accumulation of dust and debris which can hinder motion. I also use Mach 3. It is very much worth learning LinuxCNC, and for what you need it is very easy. You will use these when setting up linuxcnc. I'm using both the A and Y axis to drive the gantry. Also, if Windows is installed in ACPI mode, try changing it to Standard mode. How to set the Steps Per Unit in Mach3. Not worth spending 5. Author Topic: Missing steps at 10 ipm? Taig, Mach3, Xylotex (Read 32889 times) Taig, Mach3, Xylotex (Read 32889 times) 0 Members and 1 Guest are viewing this topic. Because the software "thinks" it is at one position, it will carry out the G Code from that position, never "knowing" that it is actually at another position. If you have Clustering enabled in LightBurn, make sure you are using the proper files for the LaserBoard: Stock Files; Follow the steps in our Configuration Adjustment Guide. Re: Missing Steps - Mach3 - Taig Mill. Y: Mach3 missing steps fix. If the missing steps remain after this build, logic tells me I should start looking at the G540 controller. Important to note that changing to a different step kernel frequency Mach3 must be restarted for the changes to take effect and the trajectories must be retuned in the Config->motor tuning menu in Mach3. Input pin nr. The torch will track the previous cut . I have been assuming that this. (Depth of cut . The stepper is missing steps. Sep 25, 2018 · Hi Thomas, If your Z axis zero is changing during a job run this suggests missing steps. Mach 3 interprets G code in the software and sends a signal over a parallel port to the motor driver. 10 of the printerport is activated if the side button is pressed, if pin 2&3 of JP1 are connected , if pin 1&2 is connected then pin 10 is a normal input, when pin 1&2 are connected input 10 can not be used for other purposes First Tip How to Stop mach3. « Reply #3 on: September 12, 2006, 04:12:23 AM ». Problems with my new Chinese CNC. The important thing to note is that there are no feedback loops on these motors, or anything that tells the motor what is actually happening vs. 8Deg per step is industry standard and gives 200 full steps per revolution. or just pull down the rr override on the Mach screen but the reset of mach3 motors is the best way6 Solutions for Mach3 Obsolete Parallel Port Interface. 0 MACH THREADING 2. If the motor is turning and the axis is not moving - Mach3 does not know that - and assumes that all is well. Counts Per Unit: Enter the number of steps per unit of your 10 Best 3 Axis CNC Controllers. The controller with its CNC Control Software and May 23, 2018 · The maximum performance I can find seems to be around 500mm/minute, with the external driver step settings set to 1/8 microstepping, steps/mm at 1500, max rate at 500, and accel at 20mm/s^2. and missing of steps by using it with mach 3 it doesn't ever happened. EC300 Motion Controller. George. If you do not want to afford a motion controller, get a second PCI parallel port and see what you get but chances are you will still be having issues. If Mach3 in not seeing your license it will not show it along the top for Mach see attached, and this is the license file in the main Mach 3 folder. Steps To Reproduce. Preparatory steps: 1. 3. Not knowing the distance that this axis will travel, it's best to use a very small value. With an easy ARM controlling chip, it is easy to work with the help of this CNC controller machine. Apr 19, 2011 · I also use Mach 3. Do not try to machine any type of metal with the 3020 mill. The same holds true for your step-over amount. means that it works properly with Mach3 and misses steps with your Arduino programM98 & M99 G-Code: CNC Subprograms & Macro Calls CNCCookbook's G-Code Tutorial Subprograms and Macro Calls for Code Building Blocks. Hello there! In New in the cnc World and as started point i select an 6040 chinese cnc. Therefor, with what we know and the driver is set at 1/4 microstepping and the stepper motor has a natural step count per revolution at 200: steps / mm = (200 steps x 4) / 0. DIR must be stable 200 nanoseconds before and after the rising edge of the STEP signal. In order to achieve accurate cuts on your 3 axis cnc router table, you must set the steps per unit accurately. First Tip How to Stop mach3. Stepper motors are missing steps (stalling) during programmed motion

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Steps mach3 missing

  1. I have no more ideas for my problem ... PLEASE HELP !!!

    What I want to eliminate .... When I moving Y axis by JOG ... after 10 - 20 or 30 cm of movement ... and when I hold the stepper motor by hand .. I fill strange, fast, single motor stall for very small period of time . This is as losing steps ..... When add dial indicator to the axe after some movements .... I lose 0.1 mm linear accuracy ... for 1-2 and more hours will be about 5 mm .... maybe

    The sound is like a little, fast "knock" ....

    What I did to eliminate the problem, noise .. losing steps ...
    I tried many combinations

    - 2 PC with Mach3 + LPT to the drivers. ( Acer 2 GB, 3 GHz.... Win XP .. ) and Cel 2.4 GHz, 256 MB ... Win XP
    - 2 types of drivers - DQ860MA + Purelogic driver PLD8220-G2
    - 2 power supplies ...
    - 3 types of stepper motors - nema 23 - and 34 x 2...
    - long shielded cables .. and short ...ones .
    - Ground pipe in earth with cable to all shields .... cases ....
    - tried all BIOS LPT modes EPP etc ..
    - kernel mode - 25 and one level up KHz
    - LPT direct cable to driver and thru BOB PCB card ....

    With single G code - Y500 F500 .. after some mm I fill the same issue ...

    When unattached motor is on the table ... the problem is the same ...

    I have single phase 220 AC voltage ....

    If someone have any ideas ... wiring drawings - please send it ... THANK YOU !!

    Emil
    Last edited by emilvv; 17-09-2015 at 01:14 PM.

  2. With all the different hardware options you've tried without resolving the issue I'd guess that something may be amiss in your motor tuning, you can have problems with too fast or too slow and if acceleration is too high or too low.

    - Nick

  3. I had this problem a long time ago and it was caused by running the all-in-one system3 driver/Bob board at 30V. Dropped to 27V fixed the problem.
    But you are using good seperate drivers so should be ok. What Bob are you using and what voltage is going to the drivers? Is it overheating?
    Also tighten all screw terminals

  4. Hello,

    Problem is not resolved ... But I have one more issue to check .. this evening .... :)

    My motors acts like - http://www.woodworkforums.com/showthread.php?t=167883
    ( only on 200 .. 300 mm of movement .. not on every rotation .. )

    I have XP optimisation.txt file with step by step guide how to setup PC before Mach3 installation ... but maybe I miss this step for switching to standard PC .... and this cause this signal spikes on LPT - missing steps and stalling for small periods ...

    So, I will check and if this is a problem will post the results .....

    I have 2 core CPU and I hope switching to Standard PC ... will fix the problem ....

    THANKS TO ALL OF YOU !!!

    Emil


  5. What voltage do you have coimng out of the PP.? This problem sounds very much like PP is low power probably 3V type. This will cause the problem you are having because there isn't enough voltage difference between HIGH/LOW.

    Also one more thing that can cause this and in some way related to the above is if your Step pulse is on the wrong edge of the pulse. ie: On the down slope(falling edge) when the controller is pulsing on the up slope (rising edge). This affectively puts the timing out and you'll loose one step with every direction change.
    To test this for each Axis just write some G-code which moves the axis Back n forth small amounts but 1000's of times very fast.
    ie:
    G0 x10
    x0
    x10
    x0

    Copy and paste into a file to make several 100 lines. Make a Mark before starting and run the file. It should return and if it doesn't then you are on the wrong edge of the pulse.

    Some drives will let you select the rising or falling edge, Some won't. To Force or change the edge just toggle the Active Low in Motor outputs. This will reverse the motor direction. So goto Homing and Limits and Click Reversed for that axis.

    Try and let us know.?

    Or better still do your self and machine a favor Dump the PP and get your self a external motion controller.!! . . . You won't regret it.
    Last edited by JAZZCNC; 15-09-2015 at 03:51 PM.

  6. My understanding of the operation of the drivers is that the direction pulse should overlap the step pulse at both ends, so whether direction is set one way or the other, High Low, 0v 5v whatever it should be in a settled state before the step pulse, then whether it is a positive going pulse or negative one, both the leading and trailing edges are within the direction state. I would imagine that if different protocols are used for step and direction then results would be unpredictable. As would happen when the timing of pulses is in error, then direction would not be properly set. - Hence missing steps.
    JAZZ - correct me if I am being Naive

  7. It's more to do with the Controller issuing the step pulse on the rising edge and the drive set to process it on the falling edge there becomes a timing issue so when a direction change occurs the step is in front of the Dir and a step or MS is lost on each change of direction.

    Having the wires on the drive wrong way around will also cause this. So Step + being connected to Step- on BOB. Also a BOB with slow Opto's could cause this but seen has the OP tried direct to drives I reckon not.!
    Last edited by JAZZCNC; 15-09-2015 at 07:13 PM.

  8. Emil,
    is this happening only to the Y axis?
    And I didn't see what drivers you are using.

    P.S. Saw the drivers in the first post.
    Last edited by Dragonfly; 15-09-2015 at 07:57 PM.

  9. Quote Originally Posted by JAZZCNCView Post
    It's more to do with the Controller issuing the step pulse on the rising edge and the drive set to process it on the falling edge there becomes a timing issue so when a direction change occurs the step is in front of the Dir and a step or MS is lost on each change of direction.
    I think that is what I said i.e direction not settled before step.

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