On Sunday 14 February 2021 11:56:23 Peter C. Wallace wrote: > On Sun, 14 Feb 2021, Viesturs L?cis wrote: > > Date: Sun, 14 Feb 2021 18:50:12 +0200 > > From: "[UTF-8] Viesturs L?cis" <[email protected]> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <[email protected]> > > To: "Enhanced Machine Controller (EMC)" > > <[email protected]> Subject: Re: [Emc-users] Some > > questions about 6i25 and 7i77+7i74 combo > > > > svÿÿtd., 2021. g. 14. febr., plkst. 17:43 ÿÿ lietotÿÿjs andy pugh > > (<[email protected]>) rakstÿÿja: > > On Sun, 14 Feb 2021 at 15:06, Viesturs Lÿÿcis <[email protected]> wrote: > > > How do I specify in HAL file, what mode 7i77 should use? I intend > > > to use mode 0 - analog outputs, encoder inputs and onboard I/O > > > pins, > > > > It will default to Mode 0. > > > > But you set it with the "loadrt hm2_pci > > config="...........sserial_port_0=02xxxxxx........." (for mode 2) > > Ok, thank you! > Just wanted to confirm that after connecting field power to 7i77 all > the gpio pins did show up and now they were like I expected - inputs > and outputs already defined. > I used the opportunity to connect also 7i66 and 7i64 boards to 7i74 > and they also showed up in HalShow with all the pin names all clear to > me - so far so good. > > I have one more question: do I understand correctly that there is no > field power input for 7i64, meaning that I cannot power it with 24 > VDC? in that case - any suggestions for simple 24V to 5V voltage > conversion? It will be placed on top of Y axis carriage in a retrofit > Biesse-equivalent woodworking machine and only 24 VDC are available > there. > > The 7I64 has low enough power draw that it can be powered via the CAT5 > serial cable > ebay has "buck" convertors good for a couple amps that take an input up to 35 volts and will give an adjustable output, even showing you the imput or output on a 3 digit display for something in the 5 dollar range. I've used them to make 5 volts from a 24 volt line, but I've also had one fail straight thru, cooking the bob on the output, Failure may have been related to a 5 volt relay without a flywheel diode. I was banging a 5 hp vacuum for chip removal from the flood coolant circuit in axis. About a 1.5" by 2.25" by .5" board. You could stick that most anyplace its needed.
> Viesturs Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
