2016-01-21 18:53 GMT+02:00 Claude Froidevaux <men...@bluewin.ch>: > Hi, > > I may have a nice project of retrofitting a lathe (about 20kW, quite a > nice toy, but with an old control that is dead) > > I tested servo driver, they work. So basicely, all I need is: > > - 3 output +- 10V (to give speed consign to servo amplifier) > - 4 quadrature input encoder (I checked this, its a 1micron 1 increment, > pretty simple), 1 channel is for MPG, another for spindle position > > this shall do the job for the main axis, then I still have the tool > changer, but it seems pretty straightforward (a bunch of IO to drive in > the required sequence). Of course there is a lot a digital IO, but I > have schematics, thus is seem pretty straiforward as well. > > I would also love to have analog input on MESA card, but this does not > seems to exist. anyone to confirm ? (use would be load monitoring, > spindle speed override, axis speed override, I can do this really simply > with a small USB card, I did not need real-time capabliites) > > Idea is to use MESA 7I33TA for +-10V out and quadrature inputs, and 7i37 > or similar for digital input/ouput. What card shall I use assuming a PCI > or PCIe port ? i would like to work with the 5i24-16 or 5i24-25, but > there is no information ( or I did not find any). As much as I > understand, these card use FPGA to make PCI interface, as opposite to > 5i20 for example, where there is a dedicaced chip for this. Is there > LinuxCNC support for the new generation board (5i24, 6i24 ) ? > > 5i25 + 7i77 set is widely used for analog control... 6 analog outputs, 6 encoder channels, 32 inputs, 16 outputs. For analog inputs, MPG, some IO, matrix keyboard and LCD you can use 7i73 serial card. For more IO there are remote serial cards. Also, the second DB25 connector on 5i25 can be used for some buttons etc. (at least that's what I'm going to do).
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