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321 rs232c OSP7000-700L

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I am having issues sending programs from a computer to a Okuma Crown L2060 lathe with a OSP7000-700l controller.  The machine give a "321 RS232c status time out error FFFFFFFF' read' " when trying to receive the program. I have tried to change the optional parameter bit #1, #8, and #12 that was recommended on a different thread. I am unsure how to change these values. I tried to hit set and change the value, but I get an "Impossible Error 3" display. I have attached a picture of the screen. Any help on solving the problem or how to change these parameter would be helpful.

thanks in advance,



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