MODBUS RTU Master

robertkc

Subject:

MODBUS RTU Master

· Posted: 22.03.2014 - 18:22 · #1

I know that a slave driver is already provided, but is an AVRco driver for Modbus master available or in the works ?

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Subject:

Re: MODBUS RTU Master

· Posted: 23.03.2014 - 17:54 · #2

Hello Robert,

no, is not implemented.
But ask Avra, he did the most works with Modbus.

rolf

Avra

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Subject:

Re: MODBUS RTU Master

· Posted: 23.03.2014 - 19:41 · #3

AVRco driver for Modbus master is not available and as far as I know no one is working on it. I have the knowledge but I didn't need it my self and there was no one to sponsor it yet.

robertkc

Subject:

Re: MODBUS RTU Master

· Posted: 23.03.2014 - 22:35 · #4

Too bad.

But thanks for getting back to me, guys. I'm able to locate at least one C library for this. It doesn't look too difficult, and if I weren't on a short deadline, I'd make an AVRco library, using that code as a reference. Alas, sans extra time I'll have to make do with C.

Avra

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Subject:

Re: MODBUS RTU Master

· Posted: 24.03.2014 - 11:12 · #5

If all you are looking for is pascal MODBUS master code, then take a look at Delphi master applications which do not use any library, and instead use direct MODBUS ASCII serial commands in a very simplistic easy to use way. They just read some number of bits or words from a register storage in MODBUS client. MODBUS RTU would be a little different but not that much harder. Creating a full featured library is quite different story...
http://www.e-lab.de/downloads/…asters.zip

robertkc

Subject:

Re: MODBUS RTU Master

· Posted: 24.03.2014 - 15:03 · #6

Thanks, Avra. I'll give it a look.

MODBUS RTU Master

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