On Thu, 24 Jul 2014, Gene Heskett wrote: > Date: Thu, 24 Jul 2014 16:13:22 -0400 > From: Gene Heskett <ghesk...@wdtv.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] joint > > On Thursday 24 July 2014 15:08:54 Philipp Burch did opine > And Gene did reply: >> Hey Aram! >> >> On 24.07.2014 20:58, a k wrote: >>> this is pin --- hm2_5i20.0.encoder.03.velocity >>> >>> this is also pin ----- scale.0.in >>> is it possible to connect pin to pin? >>> manual say -- connecting signal to pin >> >> In fact, you can only connect pins to pins, signals/nets are just >> aliases to make the whole stuff more readable. You have to use the >> 'net' command to make these connections, though. The name of the net >> doesn't matter as long as it follows the rules and it is not already >> connected to an output. So if >> >> hm2_5i20.0.encoder.03.velocity >> >> actually exists and is an output and >> >> scale.0.in >> >> actually exists and is an input, then this line >> >> net vel-encoder hm2_5i20.0.encoder.03.velocity => scale.0.in > > I'll assume that this 5i20 card, and its daughter card actually has an > encoder.03 module available, AND that it has ABZ inputs connected from > some place on his machine equipt with a hardware encoder. Then the above > statement IS correct, but it is NOT connecting his pot to anything.
Actually it is, Aram has a THCAD which is a high isolation V-F converter intended for Plasma torch heigh control applications The easy way to read the external V-F is via the encoder velocity signal > > To physically connect a pot, he needs to find a suitable A/D converter > someplace in the firmware loaded into his cards, connect the pot to the > correct pins to drive it, and then read the output of this A/D converter > module in order to retrieve the values this pot can supply. The encoder.03 > module cannot AFAIK do that, and is a configuration mistake, a complete > show stopper in terms of getting the pots positional data. Turning it will > have zero effect. Exactly as Aram has been saying for about a week I > believe. > >> must work and will create a net name 'vel-encoder' which connects the >> two noted pins. Do you remember me telling you to dump a list of all >> known pins into a file and posting it on pastebin? You can do the same >> now (without actually posting it, of course) to lookup how the pins are >> actually named. Or you can just open the halmeter (type 'halmeter' in a >> terminal while LinuxCNC is running) and browse through the list of pins >> and/or signals. This way, you can also check if the pin value changes >> when you move the slider on your pot. >> >> Cheers, >> Philipp > > [snip the rest of his post] > > 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) > Genes Web page <http://geneslinuxbox.net:6309/gene> > US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS > > ------------------------------------------------------------------------------ > Want fast and easy access to all the code in your enterprise? Index and > search up to 200,000 lines of code with a free copy of Black Duck > Code Sight - the same software that powers the world's largest code > search on Ohloh, the Black Duck Open Hub! Try it now. > http://p.sf.net/sfu/bds > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Want fast and easy access to all the code in your enterprise? Index and search up to 200,000 lines of code with a free copy of Black Duck Code Sight - the same software that powers the world's largest code search on Ohloh, the Black Duck Open Hub! Try it now. http://p.sf.net/sfu/bds _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
