Mauricio, On Thu, 23 Feb 2006 08:46:17 -0300, Mauricio Jancic wrote: > A customer already wired an installation like it's shown in the diagram. The > communications are made using CAN at 250 kb/s. I'm not a CAN expert, but looking at your diagram you could do it with 2 CAN busses if this is acceptable, using the two-way technique that was suggested earlier: Host-CAN2-Host-CAN3-Host-CAN1 (total 260m) and Host-CAN5-Host-CAN4 (total 200m). The first one is a little over-spec, but not much! Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist