Serial-to-ethernet converters

[Mochuelo]

Hi,

I have some vague questions about these devices:
- Is it easy to configure them, in general?
- The way to tell the device its IP number is through the serial
interface?
- The protocol is connectionless?
- Which one is the cheapest you know of?

Thanks a lot.

 

[Ross Marchant]

Hi,

I have some vague questions about these devices:
- Is it easy to configure them, in general?

Configure using web browser

- The way to tell the device its IP number is through the serial
interface?

They come preset to a specific IP address, and you can connect to this IP
address to change it.

- The protocol is connectionless?

Usually three options - TCP Server, TCP Client or UDP. Once connection is
established it is transparent. There are settings to control packetising -
i.e. send packet after certain time out or if certain end of message
character is recieved.

- Which one is the cheapest you know of?

We use a product from moxa - www.moxa.com

 

[Mochuelo]

They come preset to a specific IP address, and you can connect to this IP
address to change it.

What if you forget it?

Also, according to what you say, it looks like I could not first set
up and wire a network with several nodes and then assign IPs. Is this
right?

 

[The Real Andy]

Hi,

I have some vague questions about these devices:
- Is it easy to configure them, in general?
- The way to tell the device its IP number is through the serial
interface?
- The protocol is connectionless?
- Which one is the cheapest you know of?

Thanks a lot.

More info please. What are you connecting it to. Have you already
designed the circuit. Can you choose a processor to use with your
circuit?

 

[Mochuelo]

More info please. What are you connecting it to. Have you already
designed the circuit. Can you choose a processor to use with your
circuit?

This is to connect around 100 monoliths at an airport, each one with a
PC board and some extra electronics governing a turnstile that allows
removing / inserting luggage carts inside a guide. The "extra
electronics" has an RS-232 input, so the PC boards could hopefully be
replaced by serial-to-ethernet adapters. The processor in the extra
electronics was already chosen (designed and built). The one (if the
converter actually uses one) in the serial-to-ethernet converter can
be any one. That should be transparent to me. The goal is to minimize
cost yet still allowing the same functionality.