Version 3.6.9 is available

[janiversen]

Due to a disturbing bug in the RTU_Framer / Transaction is was decided to make v3.6.9

The release contains a bug fix, and all PR´s without API changes.

v3.7.0 is still planned to be released in June.

[rwskinner]

Anyone have an issue running the server_updating example? I'm getting errors:

python3 server_updating.py --comm tcp --framer socket --port 502 --log debug --store sequential --slaves 2
Traceback (most recent call last):
File "C:\Users\Richard\Documents\My Python Projects\Modbus Slave\examples\server_updating.py", line 126, in
asyncio.run(main(), debug=True)
File "C:\Program Files\Python312\Lib\asyncio\runners.py", line 194, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "C:\Program Files\Python312\Lib\asyncio\runners.py", line 118, in run
return self._loop.run_until_complete(task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Program Files\Python312\Lib\asyncio\base_events.py", line 687, in run_until_complete
return future.result()
^^^^^^^^^^^^^^^
File "C:\Users\Richard\Documents\My Python Projects\Modbus Slave\examples\server_updating.py", line 121, in main
run_args = setup_updating_server(cmdline=cmdline)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Richard\Documents\My Python Projects\Modbus Slave\examples\server_updating.py", line 106, in setup_updating_server
return server_async.setup_server(
^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'server_async' has no attribute 'setup_server'

[janiversen]

Hmmm looks like a bug, let me take a look.

[janiversen]

I just made a checkout of v3.6.9, cd "cd examples".

As you can see it runs fine:

(pymodbus) casa_macmini examples % ./server_updating.py --comm tcp --framer socket --port 502 --log debug --store sequential --slaves 2
2024-07-19 10:58:10,092 DEBUG logging:103 Awaiting connections server_listener
2024-07-19 10:58:10,092 DEBUG logging:103 getValues: fc-[3] address-17: count-6
2024-07-19 10:58:10,092 DEBUG logging:103 setValues[3] address-17: count-6
updating_task: started: initialised values: [0, 0, 0, 0, 0, 0] at address 16
2024-07-19 10:58:10,095 INFO  logging:97 Server listening.
2024-07-19 10:58:12,096 DEBUG logging:103 getValues: fc-[3] address-17: count-6
2024-07-19 10:58:12,097 DEBUG logging:103 setValues[3] address-17: count-6
updating_task: incremented values: [1, 1, 1, 1, 1, 1] at address 16
2024-07-19 10:58:14,099 DEBUG logging:103 getValues: fc-[3] address-17: count-6
2024-07-19 10:58:14,100 DEBUG logging:103 setValues[3] address-17: count-6
updating_task: incremented values: [2, 2, 2, 2, 2, 2] at address 16
2024-07-19 10:58:16,102 DEBUG logging:103 getValues: fc-[3] address-17: count-6
2024-07-19 10:58:16,102 DEBUG logging:103 setValues[3] address-17: count-6
updating_task: incremented values: [3, 3, 3, 3, 3, 3] at address 16

your problem could be that you have an old version of pymodbus installed, so that the import in server_updating.py do not find the correct module. You need to check that e.g. with "pip list".

However the setup_server function is old, so there might be another problem, but it is related to a faulty import.

[rwskinner]

Thanks for checking. I had the correct version of pymodbus so I downloaded the examples folder again and it's working.