RS-485 communication protocol

[Wajiddjo]

Hello,

I am using this system which has RS-485 port so i need to connect with myrio and do program in labview. I have mentioned two converters. Can I use those two converters to synch with myrio and can program in labview.

Through this port (RS-485) I have to control DC motor speed.

Can you help me out please.

 

[K C]

Hi,

RS-485 is not a communication protocol. It is a hardware layer for data transport. The data transport is, in many cases, handled by a protocol (e.g ModBus)

Both adapters are RS-485 to probably a Logic TTL level. But that is hard to tell from a picture !!

You need to connect this to a TTL level COM port. Also the one with one IC you also need to provide a Transmitter enable signal.

The other one is maybe a RS-232 to RS-485 converter. But no pin for the TXEn 

I think you are better of with a USB - RS485 converter.

Kees