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I want to know what is the maximum practical data rate possible using RS485 for a distance of 300m. Are there any calculators/ references which mention the practical achievable limits?
In reply to Avi Chami1:
Thank you for the reference. The document specifies a conservative speed of 300kbps over 300m cable. Can this speed be increased? Maxim MAX3291/MAX3292 specifies that pre-emphasis increases the speed/distance limitation. Is it possible to attain 700kbps over 300m?
In reply to murali kandasamy:
You may also want to check this application note
Hello, please find below two charts for cable-length vs data-rate for RS-485. The upper chart gives distance in feet, the lower one in meters. Regards, Thomas
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