Steve, If you look at the PDF you probabally want the 25 to 9 pin connection, if you look at the null modem using 3 wires between connector and the blue wires are connections between the shown pins only, the jumpered out pins do not go between the 25 and 9 pin D connector. They are just local to its own D plug.
If it is still not clear, I could probabally find one I could open up an post a pic.
Al.
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |