![]() ![]() Since upgrading to it, it's allowed me make better use of my PC, than having it as a "dedicated" CNC pc. The UC 100 Buffers the commands and has it's own timing circuit, so there's no syncing issues. Only to have them run properly after when I didn't try to do anything else on the PC while the program was running. On my old setup, a couple of times I tried doing other things on the pc, while machining something and ended up messing up the parts. Having other programs running on the PC can cause the timing of the signals sent by the parallel port to be delayed or "not timed properly" causing steps to be mis-timed. He told me the parallel port sends the signal in realtime and the BOB reacts in realtime, without buffering. A friend much more experienced with Mach3, than I am, told me it is/was because of signal timing issues with the parallel port. I've read Mach3 recommends limiting the software on the PC running Mach3. I've found the UC100 allows me to better utilize my PC, than when I was using the parallel port. I use a UC100 that allow me to drive the BOB parallel port via usb. I think the biggest advantage with Win7 over is XP is MS is still supporting Win7. I'm running Win7 - 32bit with Mach3 without any problems.
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