Linuxcnc and Profibus

My config is here:

forum.linuxcnc.org/10-advanced-configura...fibus?start=0#223639

for real time we have done ethercat with DC

What does 'with DC' mean?

I think in many applications it should be great like pneumatic terminal, some decentralized sensor boxes etc.

I totally agree, that was my motivation to try it out. That and the fact that these profibus devices go for relatively cheap on the second hand market.

Yes there I saw, profibus stuff are pretty cheap in the comparasion with ethercat stuff. "ethercat with DC" means that communication protocol with ethercat format has feature called Distributed Clock or DC which gives a master piece of system knows which are delays on each slave which should be controlled. It is counting with each delay value for retain real time on each slave. It is most advanced opensource protocol from my point of view. ethercat is something like backbone or construction which can carry any other known protocol as CANopen (ethercat in format CANopen over Ethercat, ethernet over ethercat, sercos over ethercat,....etc) 

lets check this - forum.linuxcnc.org/ethercat - there is plenty of stuff

Thanks, I have not had the opportunity to do anything with ethercat but I do believe that getting ethercat into linuxCNC was an important step forward.

I am recomending to start with them. I am working as automation engenier for a years but I can not see better stuff that not based on ethercat. but there is some trouble with supply on ethercat components nowdays. prices are crazy high and delivery terms equals infinities.. 

but I rocommending for beginning to buy Delta ASDA ethercat stuff which is areadly implemented in the linuxcnc ethercat... there is plenty of documentation and guys with working hardware.. delta are great but you have to use only their hardware and only TTL encoder for secondary feedback...

do no go my way, to configure older stuff... you will spend tons of time in the german manuals and mailing with supports which do not know about your stuff anything...

Then I can recommend this guys " acim.nidec.com/drives/control-techniques...tax-hd-m753-ethercat "... there is great documentation and fully configurable driver to non brand motors for complex purposes.. 

​​​​​​​if you have any other questions you are welcome

this guy is really great.. my ethercat idol 

He did .iso of working debian with all stuff preinstalled ... this is the easiest way to get lcec 

github.com/grotius-cnc/linux_rtos