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Post# A1089980

RS485 Serial Information (Felben)

Posted on: Tuesday, 21 May, 2024  05:50
Updated On: Tuesday, 21 May, 2024  05:51
Expires On: Monday, 15 February, 2027  12:50
Reply to: (Not Shown)
If you are pushing any limits, the termination resistor value has to be determined empirically for the individual network.
If you are pushing the data rate above 100kbit or the line length above 1000 meters, you may want to use a better grade of wire. While it may seem quite rational to assume that an RS-485 driver IC pin that is labeled A matches the RS-485 standard's wire "A", this is actually an assumption and is in fact not the case.

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