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IndustryArena Forum > MetalWorking Machines > Okuma > Question: Software, Hardware or no flow control
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  1. #1
    Join Date
    Jul 2010
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    0

    Question: Software, Hardware or no flow control

    Hello
    I'm currently working in communicating several Okuma machines for DNC use, and I have faced this proble,: Whats "better", or what are the advantages and disadvantages of hardware software or no flowcontrol, and also what are the diferent pinouts for the RS232 port.

    Any help, comment or direction will be greatly thanked.

    Salvador Alvarez

  2. #2
    Join Date
    Mar 2009
    Posts
    1982
    software flow control is better, when You want to have better quality cable cheaper for longer distance. You need only 3 wires cable if You use only software flow control.
    Hardware handshaking is better in all other cases. For communication setup, for instance. I can't imagine RS232 setup without "full" RS232 cable. It's up to communication software also. Most free communication programs work better if there is hardware handshaking from OSP out and Xon Xoff from outside to OSP.
    "no flow control" at all is just an affair.

  3. #3
    Join Date
    Dec 2003
    Posts
    24216
    Although Mits & Fanuc recognize H.W. handshake they do not use it for flow control, only XON/XOFF, I have always used three wire cable with HW jumpered out and so far no problems.
    Here is a typical conversion for pin outs 25 & 9 pin D from Cadem.
    Al.
    Attached Files Attached Files
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  4. #4
    Join Date
    Jul 2010
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    0
    Thanks for both replies, they were very enlightening.
    Thanls

  5. #5
    Join Date
    Mar 2009
    Posts
    1982
    and so far no problems
    just curious, if there are no technical problems really? How big file You tested forward / back and how many times? Did You used small letters in test file?

  6. #6
    Join Date
    Nov 2010
    Posts
    0

    DNC Operation for OKUMA OSP- U10L (Turning machine)

    I'm connecting PC and CNC (OKUMA OSP-U10L) by DNC mode.

    But i don't find DNC operation for its.

    Do you have document ( Operating Manual or DNC Operation )?

    Please help me!

    Thank you very much!

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