MODBUS RTU

[mscrace1981]

Hello,

I'm interested in implementing MODBUS RTU protocol within Flowcode on PIC18F family. I would like know whether it is possible and also if anyone has tackled this. Some Sample code would be very much appreciated to get me started.

Thanks in advance,

Matt

[Steve]

I have no experience of this, but I found a few examples of source code via a web search. Also, there is a Wikipedia page with links to source code and more information.

[mytekcontrols]

This would be of interest to me as well. I probably wont get around to trying this until later this year, but if I do come up with something I'll be sure to post it. Of course I too need to learn the protocol.

[mscrace1981]

Thanks for your replies guys. I am unsure as to whether it is easier to embedded c code into a flowcode macro or to build up the MODBUS routine structure from scratch using Flowcode blocks . The dilemma lies in the fact that i've never put c code into Flowcode before and i want to make it easy on my self

Thanks,

Matt

[mytekcontrols]

It seems like it should be quite possible to build the protocol from within Flowcode itself. Just be a matter of using If-Then decision blocks to sort out the commands. Of course there might be a way to streamline it based on decoding commands and parameters separately. Perhaps even creating macros for the common elements. I'll be doing something like this in a couple of months for a protocol called ModCom. Later when I take a good look at ModBus, I'll probably find that I'll be able to use some of the same techniques.

[MJU]

Hey mytekcontrols

Did you use Flowcode with Modbus already?
I'm interested in this topic and want to hear from your work with Modbus...

Does anyone have a solution for the question of the topic starter???