Re: [Emc-users] A lot of input/output. Cheap (Profibus)
> > > I think your suggestion with the HAL/Arduino library will be the cheapest > > > possible and more than good for this application, I will try it for sure! > > > With some small tweaks it will be fine for a Mega board and I should have > > > enough I/O. > > > Thanks! > > > > > > /S Profibus have a very common protocol for a long time, sometimes there are cheap used IO modules available for sale and this is real professional stuff. Currently however there is no support for profibus in linuxcnc but I have been working on profibus for a short and plan to add it at soon as there is enough time. Hopefully it will be soon I just had to learn Chinese and spent arund three months on it the last year. -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A lot of input/output. Cheap (Profibus)
Gentlemen, be careful with Profibus, there are different tastes of it. Especially the one designed for building automation will not very well suit our needs. But, certainly, this is highly professional technology, extremely noise proof even at long distances of several hundred meters. Peter Am 21.09.2015 12:41, schrieb Karlsson & Wang: I think your suggestion with the HAL/Arduino library will be the cheapest possible and more than good for this application, I will try it for sure! With some small tweaks it will be fine for a Mega board and I should have enough I/O. Thanks! /S > Profibus have a very common protocol for a long time, sometimes there are > cheap used IO modules available for sale and this is real professional stuff. > Currently however there is no support for profibus in linuxcnc but I have > been working on profibus for a short and plan to add it at soon as there is > enough time. Hopefully it will be soon I just had to learn Chinese and spent > arund three months on it the last year. > > -- > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A lot of input/output. Cheap (Profibus)
> Gentlemen, > be careful with Profibus, there are different tastes of it. Especially > the one designed for building automation will not very well suit our > needs. But, certainly, this is highly professional technology, extremely > noise proof even at long distances of several hundred meters. > Peter I heard about DP and PA. I will implement the one used for Siements ET 200L-SC. I read somewhere about patent problems if implementing this kind of protocol but have also read something about an EU directive regarding software interoperability, anybode who know something? Regards Nicklas Karlsson -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A lot of input/output. Cheap (Profibus)
I have used a lot of Profibus devices. I used to work for Siemens. Profibus is very robust if installed properly.DP is the norm for remote I/O. PA is designed for the process industry and not nearly as common. I always thought that a chip was needed for a DP master.I don't think a DP master device can be made via software and standard RS485 interface, but I could be wrong. Dave On 9/21/2015 11:03 AM, Karlsson & Wang wrote: >> Gentlemen, >> be careful with Profibus, there are different tastes of it. Especially >> the one designed for building automation will not very well suit our >> needs. But, certainly, this is highly professional technology, extremely >> noise proof even at long distances of several hundred meters. >> Peter > I heard about DP and PA. I will implement the one used for Siements ET > 200L-SC. I read somewhere about patent problems if implementing this kind of > protocol but have also read something about an EU directive regarding > software interoperability, anybode who know something? > > Regards Nicklas Karlsson > > -- > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] A lot of input/output. Cheap (Profibus)
> I have used a lot of Profibus devices. I used to work for Siemens. > Profibus is very robust if installed properly.DP is the norm for > remote I/O. > PA is designed for the process industry and not nearly as common. > > I always thought that a chip was needed for a DP master.I don't > think a DP master device can be made via software and standard RS485 > interface, but I could be wrong. I also read about a chip but have not found any hardware constraints, Ethecat for example insert information into the packet while it pass thru the device which put very high constraints on the timing. -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
