Hi > A full-text search over 2.6.21 didn't show me which source file is > involved here. :-/
Sorry, memory failed me here (did not have the other box present). I just dug out the other PC and checked. Its called natsemi. Also checked the rtnet/modules directory but I don;t see anything similar in it. > >> Rarely impossible, only few hardware is so weird that you cannot > >> convince it to send/receive deterministically given a non-chaotic > >> network (like RTmac/TDMA, Ethercat, or other RT protocols ensure). > > Sounds difficult if one has little experience with this. I am just > > starting to read your paper "RTnet-A flexible Hard Real-Time Networking > > Framework" so you can imagine that I am probably not quite up to the task. > > > You should be able to test a look for your specific scenario. I wonder > if EML against the rtlo device wouldn't be much like an empty Ethercat > bus. So you should be able to test the elementary cycle - though without > process data transfer... Ok. > > Ethercat forms a ring: The master sends out a frame that is handled > on-the-fly by the slaves as it passes through them. That frame arrives > back at the RX line of the master's NIC and is thus received just like a > frame sent by some peer node in a normal Ethernet. This was new to me, great to learn. But rtnet (forgetting EML) also looks for slaves when set up as master. What response is it waiting for? Is that an ARP broadcast to specific addresses to which it is awaiting a reply? Roland. > > Jan > > > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
