25pin Serial to 9 Pin to USB. Then download the driver for the plotter. Setup the RIP to point to the USB Driver Port for the converter. Should be good to go.
That cable is too long, if that is truly 25'. 8' or less.
4100?! Trying to remember when those were made. I'm guessing the transmission protocol is either semaphore or smoke signals.
I have the fc4100-75- and am completelu new to this , we are trying to figure out what software to put on a windows 7 to run machine. All the software we had was for a mac and I dont have one anymore. Any help on where to startYou'll need a USB to serial adapter - this will give you a serial port. Then you'll also need a Graphtec 9 pint to 25 pin serial cable. With serial port connections, you don't need a driver for the plotter, you just need to know the correct serial port settings - and they need to match on the plotter, in the OS and in the software. I've not done this on a Mac, so I can't really tell you the specifics of how to set it up there. I think (from a distant memory that it should be set to 9600, 8, n, 1, hardware - but it has been a long time, that could be wrong.