On Monday 08 June 2015 09:43:42 Dave Cole wrote: > On 6/6/2015 7:06 PM, Gene Heskett wrote: > > On Saturday 06 June 2015 16:52:08 Dave Cole wrote: > >> I've been around for a while and worked with current loop serial > >> interfaces, rs232, rs422/485, Ethernet (back when thicknet was > >> standard) etc. > >> > >> Why in world would you not use Ethernet?? It leaves you with so > >> many options that are not available with RS485. > >> > >> I would join the Ethercat group, pay them some $$, get some source > >> code and use what has already been developed and use every tool > >> that they have already developed. > >> > >> No need to reinvent the wheel. > >> > >> Dave > > > > All well and good Dave, but how do we, in a cashless group, manage > > to find the sheckles to pay for a seat at that table? And how much > > is that seat, one time or annual dues? > > > > Heck of a good bunch questions, that. > > > > FWIW, I once enquired about a seat at the USB table. But $25k a > > year was not in my budget. > > > > Cheers, Gene Heskett > > ___________________________________________________________ > From the Ethercat Technology Group membership application page: > > The membership cost is pretty low... !!! :-) > > And there are some sample Ethercat master and slave source code > available > > http://www.ethercat.org/en/products/4F84049B9950437FB34749A52AB20786.h >tm > http://www.ethercat.org/en/products/54FA3235E29643BC805BDD807DF199DE.h >tm > > There is also at least one Ethercat open source master repository out > there.. > > http://sourceforge.net/projects/soem.berlios/ > > Dave > > > Apply for Membership > > If you are interested in becoming a member of the EtherCAT Technology > Group, please proceed the following steps: > > * Contact <http://www.ethercat.org/en/contact.html> the ETG > Headquarters or ask your local ETG office by phone or email. > * All necessary information, e.g. requirements as well as the > membership application form will be provided via email by ETG > Headquarters. > > >>>>> Membership is free of charge. > > You can download the ETG Membership By-Laws > <http://www.ethercat.org/en/downloads/downloads_6820D9C60B074CF9B91674 >68468C9B36.htm> within the download section.
That is sure a heck of a lot friendlier than the USB working group was. They seemed to have a 20 foot tall handyman jack under their nose. Unfortunately I am not a networking guru, just good enough that there is not and likely never will be a working copy of N-M on any of my boxen. I nuke it forthwith after the install because that is the only way I can keep it from mucking with my local settings, once it tore up my resolv.conf before I could do a chattr +i on it. It has also torn up my hostname a couple times. So since its very low cost, as in free, and there is working code I presume, it wouldn't be a huge project to make up such a network IF the small packets can make it thru a COTS $40 hub. I assume it can use our existing rj45 stuff? 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> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
