AVR-Chat

The online Modbus organization has the documents describing the
protocol.  You have to do some looking for the older reference docs,
the newer ones primarily concentrate on Modbus/TCP.

You will also need the Micromotion document for the head you are
using.  There is a specific layout to the registers in the flowmeter.
 You will need that as well as the Modbus serial documents.

Other than facing a learning curve, I can tell you that interfacing to
Micromotion via Modbus works extremely well.

John Clymer


--- In AVR-Chat@yahoogroups.com, "babak" <babak1983ir@...> wrote:
>
> Hi,dears
> I want connect AVR(master) to micromotion flowmeter(slave).this 
> connection base on Rs485 plz help me for Modbus Protocol On AVR.
>