Modbus conection error

[beanoccio]

Problem Description

With v2.10.4 my Modbus settings worked perfectly.
With v3.0.2 I get Modbus connection errors

What could be the cause?

I have now switched back to v2.10.4 and the MODBUS connection is now working perfectly again.

Steps To Reproduce

No response

Artisan Version

3.0.2

Computer OS and Version

Windows 11

Connected devices or roasting machine

DIY Roaster Arduino Mega

Files

• A sample profile *.alog file, renamed to *.alog.txt is attached.

• A settings file (Help>> Save Settings) *.aset, renamed to *.aset.txt is attached.

• Screenshots are attached.

• No files are attached.

[MAKOMO]

There seems to be an issue with the updated MODBUS lib underlying Artisan which moved to a more strict interpretation of the MODBUS specification regarding inter character timing which seems to break some of our MODBUS communication over serial.

I tried to work around this. Could you please test and report if the current continuous build works any better for you. There is a new "strict" flag in the serial section of the MODBUS tab which is by default not ticked. The new MODBUS lib default is used if it is ticked.

[beanoccio]

Thank you for the quick reply.

Unfortunately the Modbus connection doesn't work in 3.0.3 either.
Regardless of whether the "strict-Flad" is True or False

[MAKOMO]

Hm. Not so good.

In that case I need some detailed logs. Please activate Artisans debug log mode by clicking on the plus icon in the left corner while holding the CTRL and ALT keys. Then also activate the device logging by ticking "Logging" in the Device dialog (menu Config >> Device). Now turn Artisan ON and let it run for some 10sec. Turn Artisan OFF and click again the plus icon, this time holding only the ALT key. An email should open with the log files attached. Send them to the given receiver.

I am quite sure that Artisan v3.0 will work for you as it is still based on the previous MODBUS lib version. Maybe you can confirm this too.

[beanoccio]

So i can`t find a download of the Artisan V3.0.0 (only sourcecode)

In the V3.0.2 and the V3.03 (with strict-flag) did not work the Modbus connection.
I make this logging workaround an send the protocol by mail

Now I go back to the 2.10.4

Thanks

I can`t send the logfiles (there is an error)

artisan.log
artisanViewer.log

[beanoccio]

These are the Lod files with V2.10.4
There are no problems with the entire roasting process.

artisan.log
artisanViewer.log

[MAKOMO]

Those log files don't show the error as there no problems running v2.10.4. To resolve the issue for current later Artisan versions we need a log of the errors which hopefully contain information on how to fix this. For this you need to run the test (with those two debug settings activated) on the problematic Artisan v3.0.2 (or Artisan v3.0.3).

[beanoccio]

The Log-files with v3.0.2 are these:

artisan.log
artisanViewer.log

[MAKOMO]

Thanks for those logs. Sadly it only states that it never received anything from the device

No response received, Expected 17 bytes Received 0 bytes !!!!
`` 

Are you sure you did configure the serial port here correctly and connected your device while producing this log? Due to the  verbosity of the log settings the "Connect" message is not contained in this file. Again not very useful logs. Sorry.

[MAKOMO]

The log files also do not seem to complete. They should be exactly 800KB but are only less then half this size. Very strange!

[beanoccio]

I have now found the download for v3.0.0.0 and installed this release.
As you said, the Modbus connection works with this version.
So, I have no idea why it doesn't work with version 3.0.2 or 3.0.3.

Attached are the log files with V3.0.0.0 with some actions on the machine.

artisan.log
artisanViewer.log

[beanoccio]

Now I have tested the new cotinius build 3.0.3 from roasterdave.
The Modbus connection still doesn't work. Not with the strict flag false or true.
The log files are attached

artisan.log
artisanViewer.log

[MAKOMO]

In you logs I only see that Artisan did not receive any thing from your device.

Could you please download the latest continuous build v3.0.3 again (same name, don't get confused) as I applied some changes that could help to sort this out. On testing, please keep the debug settings ON. THANKS!

[beanoccio]

Sorry, it do not work.
The Connection always switch between
Verbunden ber MODBUS (5 sec)
MODBUS getrennt (3 sec)

What means in the log file this lines?

09-18 19:09:39 Dummy-2 pymodbus.logging ERROR : could not open port 'COM4': FileNotFoundError(2, 'Das System kann die angegebene Datei nicht finden.', None, 2)
09-18 19:09:39 Dummy-2 pymodbus.logging ERROR : could not open port 'COM4': FileNotFoundError(2, 'Das System kann die angegebene Datei nicht finden.', None, 2)
09-18 19:09:39 Dummy-2 artisanlib.canvas ERROR : MODBUS Fehler: Verbindung nicht möglich

artisan.log
artisanViewer.log

[MAKOMO]

Ok. Thanks anyhow for testing. I will take a look at the logs and see if I find something more. M

…

On 20. Sep 2024, at 15:06, ferihumh ***@***.***> wrote: Sorry, it do not work. The Connection always switch between Verbunden ber MODBUS (5 sec) MODBUS getrennt (3 sec) artisan.log artisanViewer.log — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

[beanoccio]

It's not a big problem for me.
I use a very extensive MODBUS communication (~ 30 registers) with Artisan and V.3.0.0 works without problems for my use.

I wonder if another roaster also has a MODBUS problem with V3.0.3
I tried to monitor the MODBUS connection with a serial scanner. The communication with V3.0.0 works perfectly.

With V.3.0.3 there is no communication at all between Artisan and slave (Arduino MEGA 2560).