Timeline for RS485 noise problems: signal ground / common ground / isolation?
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
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| Apr 16, 2011 at 22:58 | vote | accept | damian | ||
| Apr 16, 2011 at 22:57 | comment | added | damian | Well this is embarrassing, but in the end it turned out to be a software error on the PC (transmitting) end.. Moral of the story, double check serial transmission buffer sizes + get a logic analyser to confirm. | |
| Apr 16, 2011 at 22:56 | vote | accept | damian | ||
| Apr 16, 2011 at 22:56 | |||||
| Apr 16, 2011 at 22:53 | history | edited | damian | CC BY-SA 3.0 |
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| Apr 6, 2011 at 12:34 | comment | added | Leon Heller | Fix the baud rate error, then see if you still have problems. You should have done that immediately you saw the magnitude of the error! | |
| Apr 6, 2011 at 11:16 | comment | added | jpc | IMHO this does not prove that noise is your main problem. It may still be the baudrate error that is causing this. | |
| Apr 6, 2011 at 11:04 | history | edited | damian | CC BY-SA 2.5 |
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| Apr 6, 2011 at 10:58 | history | edited | damian | CC BY-SA 2.5 |
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| Apr 5, 2011 at 22:32 | comment | added | jpc | As many already noted 3.8% is excessive but what do you have on the receiving side of your 485 link? | |
| Apr 5, 2011 at 22:31 | comment | added | Kortuk | you never explained how you could tell there were noise problems. Bad data? Oscope measurements, share this. People are grasping at the only thing you told them. | |
| Apr 5, 2011 at 21:53 | answer | added | Turbo J | timeline score: 1 | |
| Apr 5, 2011 at 21:47 | answer | added | Leon Heller | timeline score: 0 | |
| Apr 5, 2011 at 21:45 | answer | added | user3624 | timeline score: 5 | |
| Apr 5, 2011 at 21:26 | history | asked | damian | CC BY-SA 2.5 |