nmertz

Also, I tried the USB connection on a PC first before this last test with no success, same results. I do not believe it is a Mac or driver issue.

That is the driver I have installed. Just two weeks ago. Version 2.2.7

If the Copam is anything like the MH721, it is my understanding that the keyspan serial to usb adapter is the best one to use, and use the serial cable that came with the plotter. I am getting ready to buy one. Will let you know!

Ok... I have come to the same conclusion as Phil. I didn't change the mother board out. I borrowed a Windows machine running XP and hooked up using the serial port. I have run about 10 pen plots and cut twice with NO PROBLEMS!! Even settiing the origin is weird like it was. The head comes up and stays up. It is working exactly like it is supposed to. Bottom line, it is the USB port on the cutter itself. Mac or PC... makes no difference. Now I have to spend an additional $40 bucks on an adapter to run it with my Mac. That kind of sucks considering that was one of the selling points to me in the beginning. But at least now I know. It should be something US Cutter addresses and fixes going forward. Nancy

Is that the driver for the USB Serial adapter? The driver provided by SignCut is named differently.

Runs MH721- What kind of Mac and OS are you running?

OK. I have run tests on a Windows machine with the same results. After drawing the head will not come up to return to the home position. I had to use the USB connection because the laptop I have does not have Parallel or Serial ports and also experienced the loss of connectivity I have seen others having. Signcut loses the Com port specifed after running two plots and defaults to the "write to file option" and the correct Com port disapperars from the list until restarting the machine. Based on these tests I believe it is a plotter problem and need to get a new mother board. Before I bought this machine I read a lot of positive reviews and since I have gotten mine I have seen so many similar problem I am beginning to suspect a "bad batch" of machines purchased around the same time. Just my opinion.

It sounds like Phil's problems and mine are almost identical. Did you ever try it with the Windows machine? I can try that but wanted to know if was any better before I go through that whole process. Nothing I have tried has solved the problem. What makes absolutely no sense to me is that I can take the same file, run it two different times with different results. It was a pen plot and the first time a ran it, it was perfect. Now every time after that I get the same problem of the head not lifting as it returns home. If it were a communication problem, wouldn't the result be the same each time?

I have tried changing the baud rate and it made no difference. Also, it is not a constant thing. Sometimes it will happen and sometimes it won't (with the same file) which makes me think it is the cutter itself. I am still doing some tests. I have a few other ideas to try.

I am having the same issue with the head coming down after hitting the origin button. It will come back up if I hit it again, but is that a symptom of a bad motherboard?

I am getting the impression it is not a software problem but more of a hardware problem (the cutter itself). I have been able to cut successfully using a work around. I just drew a small circle at the edge of my design so when the head starts home in the cutting position, it runs up the side of the vinyl and away from the design. It will work as long as it completes the cutting. Sometimes it does and sometimes it doesn't.

Is anyone out there using a Mac Intel to run a Refine MH721? I am running Sign Cut LE and here is my problem... when cutting, the cutter either stops short of the complete design and cuts it's way home or finishes the job and still cuts it's way home. I have run all sorts of cutters and software, so I am not new at this and have tried everything I can think of to correct the problem. It sounds like some PC users are having the same difficulties, so any suggestions from anyone would be helpful. I have run about 20 test files and only had one cut successfully. Have no idea why that one time. Same file mulitple times doing different stuff!