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Author Topic: RS422 and Arduino Schema is ok ?  (Read 1153 times)
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Grag38
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« on: April 12, 2011, 08:05:14 am »
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I want to realise a transmission with 2xmax485 for 422 full duplex communication (TX+/TX-/RX+/RX-)

Is this schéma is ok for you. The length of the line will be < 10meters

Is it necessary or better to use optocopler like 4N28 ?

Thanks for your comments.
« Last Edit: April 12, 2011, 08:17:00 am by Grag38 » Logged

pwillard
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« Reply #1 on: April 12, 2011, 09:55:57 am »
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It looks fine.  You should not need or want opto-couplers.  You want something designed to overcome the influence of wire length... and these chips do that.
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Grag38
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« Reply #2 on: April 12, 2011, 03:44:10 pm »
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Thanks for a so speed answer ! I will realize that circuit.

I will tell you you more when my project will be efficient !

Grag38
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