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Question #: 15205

Question: [USB and Ethernet CNC Control (Pokeys57CNC)] With servomotor encoders connected to Pokey57, will Mach4 DRO update when motors are turned manually?

Current Solution

The closed-loop function of motors and drivers (either servo or stepper) is confined between the motor and the driver. If the motor did not achieve the number of encoder pulses, the driver will attempt to spin the motor until the commanded pulses are achieved. Drivers for servos and steppers for CNC machines have an alarm terminal to inform the pokeys57cnc in case of a condition that the driver is not able to achieve the commanded pulses over a specified time.

If you wish to turn a motor by hand for each axis, you can use an MPG (manual pulse generator) for each axis which will update the position of the axis. You can implement this on a pokeys57CNC controller.

Respond:

Other Possible Solutions to this Question

  • [596] I am new to CNCs, curious to know what I need to look for in a pendant that would be compatible with this board and Mach4?

    I recommend using a wireless pendant rather than one that is wired to the controller.

    Here is a link to one on Amazon.com: https://amzn.to/3r3AfTm

    This is an affiliate link.

    Click the link to add information to this solution:
    [596] I am new to CNCs, curious to know what I need to look for in a pendant that would be compatible with this board and Mach4?

  • [596] Hi there! Thank you for your great works. I was wondering if there is a way to communicate with this board using custom-developed software instead of Mach3 or Mach4.

    Yes, you can absolutely communicate with the Pokeys57CNC controller. The developer's website has various ways of control, including their poblock software, or directly programming using C#, or C++. I have tested the C# method for a job I did for Lockheed Martin and worked really well.

    Click the link to add information to this solution:
    [596] Hi there! Thank you for your great works. I was wondering if there is a way to communicate with this board using custom-developed software instead of Mach3 or Mach4.

  • MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

    Try slowing your feedrate down and increasing spindle RPMs. End-mills will leave a poor finish if you go too fast. Make sure your cutting depth isn't too much. Maybe the endmill or cutter is blunt? Could it be the feed direction of the cutter? Some materials need to be fed in a certain direction.

    Click the link to add information to this solution:
    MOTOR GOING TWO DIRECTION WHEN JUST PUSH UP. IT WILL GO DOWN AND THEN GOES AGAIN UP WITH THE SAME BUTTON.

  • [575] my axises X,Y,Z will all light green along with my soft limit switch button. When hitting REF ALL HOME no axis move and all my DROs go back to ZERO

    You need to set up the homing/limits parameters. You can find this screen by clicking config->Homing/Limits. Make sure to wire the home switches on separate input terminals (i.e. X home switch on IN1, Y home switch on IN2, etc). You can add the limit switches to any of the IN terminals, even on the same IN terminals where the home switches are located.

    Check out this video on how to wire multiple switches on a single terminal.

    Additional Information:
    20

    Additional Information:
    20

    Click the link to add information to this solution:
    [575] my axises X,Y,Z will all light green along with my soft limit switch button. When hitting REF ALL HOME no axis move and all my DROs go back to ZERO

  • WHICH WIRES ARE CONNECTED TO THE EMERGENCY STOP BUTTON

    You can use one of the terminals on the input side of the breakout board to connect the e-stop switch.

    Additional Information:

    Click the link to add information to this solution:
    WHICH WIRES ARE CONNECTED TO THE EMERGENCY STOP BUTTON

  • I AM USING USB BREAKOUT BOARD WITH PLANET-CNC SOFTWARE. WHEN ENABLE JOGGING KEYBOARD X AXIS STARTS TO MOVE BY ITSELF (WHETHER CONNECTED OF NOT). PRESS STOP - IT STOPS FOR A MOMENT AND THEN AGAIN. WHAT COULD THAT BE? TRIED REINSTALL SOFTWARE DID NOT HELP.

    It seems to be getting some kind of interference or a short within the wiring or communication, try jogging the motors in the software without anything wired to the board. Then add one motor at a time to see if there is a short within your wiring or a faulty driver/motor.
    If the USB breakout board continues to move the x-axis with no motors or driver wired to it, please email customerservice@buildyourcnc.com for a replacement or further troubleshooting.

    Click the link to add information to this solution:
    I AM USING USB BREAKOUT BOARD WITH PLANET-CNC SOFTWARE. WHEN ENABLE JOGGING KEYBOARD X AXIS STARTS TO MOVE BY ITSELF (WHETHER CONNECTED OF NOT). PRESS STOP - IT STOPS FOR A MOMENT AND THEN AGAIN. WHAT COULD THAT BE? TRIED REINSTALL SOFTWARE DID NOT HELP.

  • [596] I have my motors and limit switches working correctly but I am unable to get any movement from the 'jog step' so that I can set 0,0,0. What should I check

    Are you trying to use the MPG (tab), or the keyboard for jogging the motors? You mention 0,0,0, are you trying to home the machine with the "ref all home"?

    If you cannot move the motors with the keyboard, check if the jog is enabled.

    Click the link to add information to this solution:
    [596] I have my motors and limit switches working correctly but I am unable to get any movement from the 'jog step' so that I can set 0,0,0. What should I check

  • IF YOU HAVE CIRCUIT (OR PICTURE) OF HOW THIS RELAY IS CONNECTED TO THE ROUTER
  • HOW CAN THE ROUTER BE CONTROLLED OR CONNECTED TO ELECTRONICS COMPUTER?

    The parallel breakout board has a relay that can turn the router on and off according to the control software in the computer. The router will turn on automatically prior to the machine moving (a time frame can be set so the router is up to speed). When the machine is finished and is not moving, the router automatically turns off. This is with the m3, m4, and m5 codes in the g-code.

    If you are interested in the USB breakout board, you will need to get an independent relay board.

    Click the link to add information to this solution:
    HOW CAN THE ROUTER BE CONTROLLED OR CONNECTED TO ELECTRONICS COMPUTER?

  • Would common practice be to have the DRO show positive moment or negative movement when moving the Z axis down?

    Safety should be the first consideration when configuring the Z-axis and how it shows on the DRO (Digital Readout). That is to say, the configuration should make sense to the operator of the machine.

    We zero the tip of the end mill at the surface of the stock we are using. When the z-axis moves into the material (the direction that the z-axis travels when the page down key is pressed) the DRO goes into the negative region.

    Click the link to add information to this solution:
    Would common practice be to have the DRO show positive moment or negative movement when moving the Z axis down?

  • Hi Do you know if your Mach3 interface board works with any of other of the current CAM programs such as MACH4?

    The Mach3 USB controller only works with Mach3. We have a controller that works with Mach3 and Mach4 called pokeys57CNC controller.
    Here is a link to that controller:
    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

    Click the link to add information to this solution:
    Hi Do you know if your Mach3 interface board works with any of other of the current CAM programs such as MACH4?

  • Hi Do you know if your Mach3 interface board works with any of other of the current CAM programs such as MACH4?

    The Mach3 USB controller only works with Mach3. We have a controller that works with Mach3 and Mach4 called pokeys57CNC controller.
    Here is a link to that controller:
    https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

    Click the link to add information to this solution:
    Hi Do you know if your Mach3 interface board works with any of other of the current CAM programs such as MACH4?

  • [596] I have followed your YouTube video on setting up the pokeys 57cnc board but when I open Mach 4 I get a error message the the connection is to slow

    I have not come across this problem, but there may be USB, or firmware issues that you are experiencing. I would recommend going on the polabs website and using their support center (https://support.poscope.com/)and posing that question to them. Also, have you tried the ethernet port as an alternative to see if that helps?

    Here is the response from an LLM:

    Check USB Cable and Port: Start with the basics. Sometimes this error is due to a poor USB connection. Ensure you're using a high-quality, shielded USB cable and that it's plugged into a USB port directly on your computer, not through a hub. If possible, try a different USB port or a different cable to rule out any issues there.

    Update Firmware and Software: Ensure that both your PoKeys57CNC firmware and the Mach4 software are up to date. Firmware updates for your PoKeys board might include optimizations or fixes that address connectivity issues.

    USB Polling Rate: This error can also arise from the USB polling rate setting in the PoKeys configuration software. It might be set too high for your system's ability to handle it. Try lowering the polling rate and see if that resolves the error.

    Computer Performance: Check your computer’s performance. If it’s running several heavy applications simultaneously, it might not be able to process signals from the PoKeys board fast enough. Try closing unnecessary applications or consider using a dedicated machine if your current setup is too taxed.

    Mach 4 and PoKeys Plugin Configuration: Dive into the Mach 4 plugin configuration for PoKeys. Ensure that all settings are correctly configured as per the manual. Incorrect settings might lead to communication bottlenecks.

    Connection Quality and Interference: Consider any potential interference sources near your CNC setup or computer. Electromagnetic interference from large motors, other electronics, or long cable runs can affect communication quality. Try rearranging your setup to minimize interference.

    Consult Documentation and Support: If the issue persists, consult the detailed documentation provided by PoKeys or reach out to their customer support. They can offer more specific advice based on the latest product updates or known issues.

    Click the link to add information to this solution:
    [596] I have followed your YouTube video on setting up the pokeys 57cnc board but when I open Mach 4 I get a error message the the connection is to slow

  • I JUST BOUGHT THE 3 AXIS W/HEAVY GANTRY, WILL MACH 4 RUN WELL WITH THIS, AND HOW LARGE CAN GO CUT AREA

    Yes Mach3 is a great program. Our 3 axis is 6'X12'X3'using all BYCNC components (incl. redsprout)

    Click the link to add information to this solution:
    I JUST BOUGHT THE 3 AXIS W/HEAVY GANTRY, WILL MACH 4 RUN WELL WITH THIS, AND HOW LARGE CAN GO CUT AREA

  • IF WE ASSUME DESIRE TO PLACE THE RED LEAF 6' AWAY FROM TABLE, HOW MUCH CABLE IS NEEDED CONNECT MOTORS ON TABLE ITSELF?

    blackToe requires a minimum cable length of of 15 ft for X, 17 ft for Y and 18 ft for Z for the redLeaf to be positioned at midpoint along the long axis and under the table. Each axis would need have 6 feet extra (form the midpoint)

    Click the link to add information to this solution:
    IF WE ASSUME DESIRE TO PLACE THE RED LEAF 6' AWAY FROM TABLE, HOW MUCH CABLE IS NEEDED CONNECT MOTORS ON TABLE ITSELF?

  • HOW THE ROUTER IS CONNECTED TO ELECTRONICS?

    The parallel breakout board has a relay that can turn the router on and off according to the control software in the computer. The router will turn on automatically prior to the machine moving (a time frame can be set so the router is up to speed). When the machine is finished and is not moving, the router automatically turns off. This is with the m3, m4, and m5 codes in the g-code.

    If you are interested in the USB breakout board, you will need to get an independent relay board.

    Click the link to add information to this solution:
    HOW THE ROUTER IS CONNECTED TO ELECTRONICS?

  • HOW IS THE ROUTER CONNECTED TO ELECTRONICS?

    The parallel breakout board has a relay that can turn the router on and off according to the control software in the computer. The router will turn on automatically prior to the machine moving (a time frame can be set so the router is up to speed). When the machine is finished and is not moving, the router automatically turns off. This is with the m3, m4, and m5 codes in the g-code.

    If you are interested in the USB breakout board, you will need to get an independent relay board.

    Click the link to add information to this solution:
    HOW IS THE ROUTER CONNECTED TO ELECTRONICS?

  • I HAVE ONE OF YOUR SMALLER STEPPER MOTORS RUNNING MY X AXIS BRIDGE CRANE AND IF IT IS MOVED TO FAST THE MOTOR SOUNDS LIKE SKIPPING STEPS WILL 651OZ REQUIRE A DIFFERENT POWER SUPPLY CONTROLER?

    Yes, the 651 oz/in motor requires a driver that is compatible to the motors (the motor will draw 6 amps max and the driver paired with this motor will be able to allow for a 6 amp draw). I would also recommend a 36 volt power supply for better high velocity performance.

    Click the link to add information to this solution:
    I HAVE ONE OF YOUR SMALLER STEPPER MOTORS RUNNING MY X AXIS BRIDGE CRANE AND IF IT IS MOVED TO FAST THE MOTOR SOUNDS LIKE SKIPPING STEPS WILL 651OZ REQUIRE A DIFFERENT POWER SUPPLY CONTROLER?

  • CAN THERE BE CLOSED LOOP CONTROL WITH STEPPING MOTORS?

    I haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

    If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

    Click the link to add information to this solution:
    CAN THERE BE CLOSED LOOP CONTROL WITH STEPPING MOTORS?

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