Isolated RS-422 communication

Hi!

I’m currently using SN75179BP to convert RS-422 communication to UART, allowing communication from my Arduino to an RS-422 device.

I need to isolate that device from my arduino+driver/receiver circuit.
Does anyone know a good optocoupler solution for RS-422 lines?
any already-isolated driver/receiver pair?

Thank you,
Liad.

any already-isolated driver/receiver pair?

ADM2481 ADM2482E_2487E IL485 IL3685 ISO1176 ISO3080 LTC1535 LTM2881 MAX1480E-MAX1490E MAX3157

That should get you started.


Rob

Hi,

What is the best library to use with the ISO1176 for RS485 communicaiton with galvanic isolation?

Thanks,

tinomk: Hi,

What is the best library to use with the ISO1176 for RS485 communicaiton with galvanic isolation?

Thanks,

The one you write yourself. Checkout the schematic on the first page of the datasheet. There are only two control lines.

mikb55: The one you write yourself. Checkout the schematic on the first page of the datasheet. There are only two control lines.

You mean the RE and DE pins? They are connected together...I am using RE/DE for direction control.

I need to use the chip for RS485 streaming of raw bytes to PC. Any other hints?

Thanks,

tinomk: You mean the RE and DE pins? They are connected together...I am using RE/DE for direction control.

I need to use the chip for RS485 streaming of raw bytes to PC. Any other hints?

Thanks,

A high signal on DE/RE will allow you to send data. No need for a library.

Are you still struggling with the issue you raised in this thread? http://forum.arduino.cc/index.php?topic=426522.msg2943918#msg2943918