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  1. #1
    Join Date
    Feb 2012
    Posts
    0

    PC to CNC communication problem

    New to the board, I have a Toro Cut CNC and have been using a floppy disk to transfer data to and from the pc. The floppy drive went out, so I bought a RS232, 25 pin cord to connect the pc to the CNC. The computer won't recognize the CNC this way. Is there any software available that needs to be used to make this work? I checked the pin out and they are correct.

  2. #2
    Join Date
    May 2009
    Posts
    104
    You could try DNC software. They have a free trial version available.
    After installing you send a program from your machine to the PC and the software senses what settings to use for comm. It also has pin out configurations.
    cnc and dnc software for RS232 CNC program transfer with drip feeding


    That should get you started.

    Good luck,
    Maz

  3. #3
    Join Date
    Dec 2010
    Posts
    61
    Make sure you enable EPP - Enhanced Parallel Port if not already done so.

  4. #4
    Join Date
    Mar 2003
    Posts
    2932
    Quote Originally Posted by steeltoes View Post
    Make sure you enable EPP - Enhanced Parallel Port if not already done so.
    Just curious... what does enabling EPP do for RS232 serial communications?

  5. #5
    Join Date
    Mar 2003
    Posts
    2932
    Quote Originally Posted by shig22 View Post
    New to the board, I have a Toro Cut CNC and have been using a floppy disk to transfer data to and from the pc. The floppy drive went out, so I bought a RS232, 25 pin cord to connect the pc to the CNC. The computer won't recognize the CNC this way. Is there any software available that needs to be used to make this work? I checked the pin out and they are correct.
    If I'm not mistaken, your machine is a Bridgeport Torq-Cut, with a DX-32 control.

    If so, you should be able to send/receive programs with any COMM software, such as NCNet Lite, free from CADEM at DNC – wireless and wired, Free DNC for 1 machine

    The cable appears to be a standard Fanuc-style cable:

    DB25 (CNC) <------------> DB9 (PC)
    1 <------ SHIELD -------- (no connection)
    2 <------------------------> 2
    3 <------------------------> 3
    7 <------------------------> 5
    4&5 jumpered (CNC end only)
    6, 8 & 20 jumpered (CNC end only)

  6. #6
    Join Date
    Dec 2010
    Posts
    61
    Quote Originally Posted by dcoupar View Post
    Just curious... what does enabling EPP do for RS232 serial communications?
    My bad I thought you were using a parallel port, EPP enables two way communication. TYo my knowledge a serial port already has two communication, but I'll verify that.

  7. #7
    Join Date
    Mar 2003
    Posts
    2932
    Quote Originally Posted by steeltoes View Post
    My bad I thought you were using a parallel port, EPP enables two way communication. TYo my knowledge a serial port already has two communication, but I'll verify that.
    Yes, a serial port is bi-directional by nature.

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