Yusuf =D6zkay ha scritto: > You are right, the problem is about frame error. But what is the reason of > it, i couldn't find it yet. > = Well, it can be anything, from glitches at power suppplly, to glithes in = the state of 485 A-B lines when switching from TX to RX - btw, do you = have pull-up and pull-down at A and B? -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist