Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Green4020 on December 14, 2025, 03:51:30 PM
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I have a Bridgeport Series 1 CNC that still has the old motor controls that was run through Mach 3 using the printer port. My motherboard died on the old computer and I have been trying to get it going on a newer computer. The new computer has Windows 10 32bit on it so I had to get a UC100 motion controller to run it. Once it the driver was all installed correctly, all I am able to do is get the motors to make a high pitched whining sound but no movement out of all three travel motors. I was able to get my old hard drive mounted in a case to be able to pull the old settings to the new computer but still no luck. There must be something wired a bit differently from the old printer port to the UC100.
I know switching this mill over to newer motor controllers would be best in the long run but I was hoping to learn more about cnc milling before spending more money and time on the old machine. I'm new to most of this and figuring it out as I go when I find time.
Thanks for any help.
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You may have the step rate set to high for the motors and/or drivers. We're you able to rescue the xml file fro the old controller? I use 2 uc100s for my lathe and mill and they work fine. You could also ask over on the cncdrive forum as they make the uc100..
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Yes, I was able to use the xml file from the last computer. Ive messed with the step rates some but nothing seems to change.
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Mach3 cannot delegate real-time motion control to two motion controllers at the same time. For a Bridgport, get something more robust that connects via Ethernet and handles +24vdc logic.
Arturo Duncan
https://cnc4pc.com
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I just have the one UC100 motion controller. There isn't a second one.
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Mach3 cannot delegate real-time motion control to two motion controllers at the same time. For a Bridgport, get something more robust that connects via Ethernet and handles +24vdc logic.
Arturo Duncan
https://cnc4pc.com
Who's trying to do that? I need 2 for convenience, one for the mill and the other for the lathe, as moving one across would involved unscrewing covers etc. What is slightly awkward is that I have to change over the other end of the USB cable as USB can't support "virtual" switching.