MODBUS Libraries

[bradnz]

Hi

I have seen some queries regarding modbus libraries but nothing that concludes this is available. I did see something that indicated it was being worked on. I need something for a project I am working on and was hoping someone might have written some MODBUS RTU library example code that they would be happy to share?

If not does anyone know when this might be avaliable? Have also asked on the uPythono forum but no answer there yet.

Thanks

[jmarcelino]

@bradnz
It is being developed, but I don't have an ETA yet.

Can you share a bit more of the intended purpose? It would help as there are several aspects to the protocol.

[bradnz]

Thanks for your reply.

We have an industrial controller that uses MODBUS RTU over RS485 that we are trying to interface to and get exception error codes off when they occur for alerting. Nothing over complicated

[daniel]

@bradnz the ETA for the libraries is ~2 weeks. We are currently testing the implementation and documenting it. Is that soon enough for you?

[bradnz]

@daniel Wahoo! Perfect :) Thanks for the update.

[alg]

@daniel thanks - this should be a big help for me too!

In the meantime though, if whoever is working on the library had a comment on my issue (https://forum.pycom.io/topic/2095/uart-read-and-uart-write-not-cooperating-with-modbus-slave) that would be great. I guess this may be an issue that they've already overcome?

[Charly86]

@daniel
I'm coming here because saw the lib on official doc but I was unable to find the library.
So now, I know it's coming, great, I'll get my chance later
Any possibility to have access to beta code, I've got a POC in one week, and would love to show it's working ;-)

[bradnz]

@daniel Any word on this? I see its in the docs, but the links are broken. If this is expected to be delayed is there any view on when this might be ready?

[heut]

@daniel I would also be very interested in a rough timeline or a teaser

[Charly86]

@daniel is there any news on this library? last time you talked about 2 weeks, we're on 6 ;-)
Not really an issue, just to know because it may impact some delay to my customers and I need to be transparent ;-)

[bradnz]

@daniel Yep, still keen to have this, so if some more detailed time frame can be provided this would be appreciated. I also need to go back to my customer and advise. Thanks!

[daniel]

Hello guys,

We are aiming to have this sorted by early next week. Thanks for your patience.

Cheers,
Daniel

[daniel]

Hello everyone,

I'm pleased to announce that the Modbus library has been released: https://github.com/pycom/pycom-modbus

We have developed it with the support and sponsorship of one of our customers. Looking forward to read your feedback on it.

Cheers,
Daniel

[Charly86]

thanks @daniel