RS-422 and RS-423

Standards for two types of serial communication. RS-422 is a balanced serial mode. This means that the transmit and receive lines have their own common instead of sharing one like RS-232. Balanced mode is more noise immune. This allows for higher data transmission rates and longer transmission distances. RS-423 uses the unbalanced mode. Its speeds and transmission distances are much greater than RS-232 but less than RS-422.

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