REXYGEN Community Forum

et0

Member

Registered: 2016-12-19

Posts: 7

M-bus

In my project I want to use several heat and energy meters as sensors, because they are already in place.
These communicate with M-bus.  I know there is at least one library developed for that on Linux, but I can't see support in Rex. Is it something that will be added in the near future?
If not, supposing I can get the comms working in Python, what is involved in bringing the values in to Rex?

Thanks!
Evan

tomáš čechura

Administrator

Registered: 2016-02-22

Posts: 371

Re: M-bus

Hi Evan,

M-bus is not supported in current version of REX Controls. However it is possible to use some of other 3rd party tools (Node.js, python, ...) for M-bus communication and import the data into REX Controls. There are various methods how to import data to REX:

• REST API - https://github.com/rexcontrols/REXexamp … PI_example

• UDP/IP - RDC function block

• TCP/IP - Rexlang function block

• text file - Rexlang function block

Cheers, Tomas

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Raspberry Pi as a miniature industrial PC. Analog and digital I/O, RS-485 and 1-Wire bus.

jaroslav_sobota

Administrator

Registered: 2015-10-27

Posts: 535

Re: M-bus

Another option is to run an external script from REX algorithm using the EPC block...

Jaroslav

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Monarco HAT for Raspberry Pi - Lightweight I/O for monitoring, archiving and control.
Raspberry Pi in industrial automation!

et0

Member

Registered: 2016-12-19

Posts: 7

Re: M-bus

Thank you very much for the answer and my apologies for the duplicate question.  I thought I had asked this but couldn't find the topic again so assumed I hadn't.

I will try to use python and import...