Slave axis all of sudden not working - Page 2


Page 2 of 2 FirstFirst 12
Results 21 to 32 of 32

Thread: Slave axis all of sudden not working

  1. #21
    Member vmax549's Avatar
    Join Date
    Oct 2005
    Location
    Lady Lake
    Posts
    1145
    Downloads
    3
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    Mach3 is FAMOUS for corrupting teh XML file. Load a KNOWN good copy of the XML and see if that does not correct your problem.

    (;-) TP



  2. #22
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    After checking the step and dir pins....all other pins switched between 0-5v on the dir and com pins. When checking the dir and com pins for 9 it was switching between 3.5v - 5v. Unlike the other pins it never went from 0-5v. Any idea why it would do this?



  3. #23
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    also when I swap pins 8 & 9 neither function works....up or down? Would this help narrow the problem down?



  4. #24
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    Quote Originally Posted by vmax549 View Post
    Mach3 is FAMOUS for corrupting teh XML file. Load a KNOWN good copy of the XML and see if that does not correct your problem.

    (;-) TP
    What is the XML file? I started using a new computer where I downloaded a whole new file of Mach3....would that have uploaded a new XML



  5. #25
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default

    I am concidering just connecting a gecko g540 to rule out all the electronics I currently use. Would this be a bad idea? Just pretty desperate to figure it out.



  6. #26
    Member john-100's Avatar
    Join Date
    Mar 2007
    Location
    uk
    Posts
    2083
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    going back to posts 22 & 23

    did you disconnect the stepper driver from the common & pin 9 BOB connections ?

    with the pin 9 output only switching between 3.5 V and 5v instead of 0 to 5V

    its possible that a short circuit in the wiring between the C10 and stepper driver input could of damaged one of the 74ACT245 IC's
    one bonus with the old style C10 is the IC's are all in sockets and can easily be replaced

    as the C10 has four 74ACT245 IC's you could swap the IC for pins 6 to 9 with the one for pins 2 to 5

    if the fault moves to pins 4 & 5 you will know you have a damaged 74ACT245

    are you using pins 1 , 14 ,16 & 17 ?

    John

    PS

    IC location & and function

    Slave axis all of sudden not working-c10-rev10-ic-location-jpg

    PPS
    before you buy the G540
    I would replace the gender changer on the printer cable or buy a printer cable with 25 plugs at both ends
    as it appears to be the only thing you have not changed

    Last edited by john-100; 02-19-2018 at 10:48 AM. Reason: ref to testing the 74ACT245 for pins 6 to 9


  7. #27
    Member vmax549's Avatar
    Join Date
    Oct 2005
    Location
    Lady Lake
    Posts
    1145
    Downloads
    3
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    The XML is Mach3's configuration file. A corrupt file can easily disconnect your slaving settings in mach3. I used to fight this all teh time with a plasma machine.

    Did this happen one day you shut down Mach3 and all was working correctly and the next day started Mach3 and you lost slaving ? (;-)

    (;-) TP



  8. #28
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default

    Yes, one day was working fine and the next day would not work? If I downloaded a new version should that have fixed it?



  9. #29
    Member john-100's Avatar
    Join Date
    Mar 2007
    Location
    uk
    Posts
    2083
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    when you downloaded & installed a new copy of mach did you manually enter the printer port address and assign pins 2 to 9

    or did you copy & paste what may of been a corrupt of your XMLfile ???

    John



  10. #30
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    Yes I assigned the pins numbers.



  11. #31
    Registered
    Join Date
    Mar 2012
    Location
    United states
    Posts
    54
    Downloads
    0
    Uploads
    0

    Default

    Hi John,

    I only swapped the placement of the wires at pins 8&9 on the board and on the system. Should I have just disconnected one or the other? Also should I make the changes in Mach 3 inputs/outputs when I swap them around on the board? Sorry if this is confusing.



  12. #32
    Member john-100's Avatar
    Join Date
    Mar 2007
    Location
    uk
    Posts
    2083
    Downloads
    0
    Uploads
    0

    Default Re: Slave axis all of sudden not working

    from post 22
    "After checking the step and dir pins....all other pins switched between 0-5v on the dir and com pins. When checking the dir and com pins for 9 it was switching between 3.5v - 5v. Unlike the other pins it never went from 0-5v. Any idea why it would do this? "


    Did you measure the voltage between com & pin 9 with the BOB still connected to the stepper driver input ??
    the abnormal voltage indicates the 74ACT245 on the BOB could be damaged
    but a fault with the stepper driver wiring over loading the BOB is another possibility

    disconnecting the common , pin 8 & 9 and re testing will help to narrow down the fault
    depending on the result
    swapping the 74ACT245 IC that is connected to printer port pins 6 to 9 is another test - see post 26

    John



Page 2 of 2 FirstFirst 12

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

Slave axis all of sudden not working

Slave axis all of sudden not working