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Serial woes...	by MrTrick	2005-09-12 20:59:33
Try here	by radiowave911	2006-11-19 12:55:59
Yes, here.... I'm not overly familiar with RS-422, however I do know is is a differential signal instead of a single-ended signal like RS-232. This gives it a measure of noise immunity and enables longer distances - hence it's use in industrial environments. I've seen it use only 4 wires, in theory connect TX+ to RX+ and TX- to RX-. I don't know what, if any, hardware handshaking is necessary.
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