| Name | moat-modbus JSON |
| Version |
0.8.0
JSON |
| download |
| home_page | None |
| Summary | Modular async modbus client and server |
| upload_time | 2024-09-27 09:43:46 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.8 |
| license | None |
| keywords |
moat
|
| VCS |
 |
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
|
| coveralls test coverage |
No coveralls.
|
###########
moat-modbus
###########
This is an anyio-enabled async frontend for pymodbus.
+++++
Usage
+++++
Check the example client and server for rudimentary usage.
Documentation patches gladly accepted.
++++++++++
Background
++++++++++
`moat-modbus` diverges from `pymodbus` in that it does not expose a "data
store" context to the user. Instead, every bus value is a separate object,
with arbitrary length and encapsulating its own encoding and decoding rules.
A Modbus server exposing writeable registers only needs to
* register the value in question
* wait for it to be written to
The rest happens behind the scenes.
+++++++++++++
Device Server
+++++++++++++
As some Modbus devices only allow ine server at a time, MoaT's Modbus
supports a simple bidirectional gateway.
How to get there:
* Write a generic device description. Put it in the modbus-data repository.
* Add an interface overlay that describes which topic to send the data to /
which topic to read.
* Run ``moat modbus dev poll FILE.yaml``. You can use a generic systemd
service if you copy the file to ``/etc/moat/modbus``.
The values can be modified (factor+offset); the gateway works in both
directions (command/state).
++++++++++++++++++++++++
MQTT / MoaT-KV interface
++++++++++++++++++++++++
MoaT-Modbus includes a server that's informed by a device profile. This server
acts as a bidirectional gateway from and to MQTT and/or MoaT-KV storage.
See "gateway.rst" for details.
TODO
++++
* configurable codecs
* get/set attributes
* pack multiple values into a message
* read-after-write if no slot
Raw data
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