Does anyone know of a way to send the modbus protocol to a remote site device such as plc system with minimal setup?

 

From what? Pic?
The data packet protocol is on the Modbus site in detail.
Max.

 

Does anyone know of a way to send the modbus protocol to a remote site device such as plc system with minimal setup?

Can you give a precise definition of "minimal setup"?

 

And 'remote'

http://www.dee.hcmut.edu.vn/vn/ptn/sch/download/Network_Architecture/intro_modbusTCP.pdf

 

There is nothing special about modbus. It is simply a serial communications protocol.
You can send it to a remote site just like any other serial data transmission.

 

There is nothing special about modbus. It is simply a serial communications protocol.
You can send it to a remote site just like any other serial data transmission.

It uses standard RS232 or other serial protocol, But you have to conform to the correct data packet format and timing of packet send receive delay/timing, device address etc.
If sending from a Pic or other programmed device, this has to be programmed apart from the inherent USART default module.
Max.

 

sorry for confusion by minimal setup i mean for the client not to have to add a whole lot of special hardware . the reason I ask is my professor wants to communicate with plc controllers from one city to another via his laptop through the internet.
also on a side note does anyone know of a transformer for building a 1v to 2v max 20amp power supply for driving 12w laser diode fap having trouble finding one.

 

You probably will need PLC's with Ethernet port.
Not sure what S/W is out there for different makes?
http://www.automationworld.com/control/toshiba-international-micro-plc-ethernet-port
Max.