CumulusMX Freezing

[Safety]

Hi all,

I have been running CumulusMX for a few months now and have found it much better than Cumulus V1, V1 I ran for many years. However, in the time I have been running MX I have noted that it had frozen a number of times i.e. the green arrow pointer with in the Last cumulus / station update status changing to red down arrow mostly the last station update. And the only way I have been able to restart is by closing and restarting CumulusMX Version 3.5.4 3075. Yes, I will be updating in due course.

Examining the MXdiags log files I found that I had a number of issues that I have sorted and it has pointed me to the CumulusMX freezing issue as this is being flagged as *** Data input appears to have stopped. I have attached file 20200516-200855.txt. As CumulusMX had been running OK at 2020-05-17 11:31:58 I trayed an experiment to see how CumulusMX would handle the removal of the data etc from my Davis vantage pro weather envoy this I did at 11:31 and as can be seen below how CumulusMX is seeing this condition at ~11:33 the data was reconnected but CumulusMX did not see this and would not respond correctly i.e. did not start responding until I stopped the programme and restarted, which are the same symptoms that I have been experiencing .

2020-05-17 11:31:58.234 !!! loop data not received, bytes received = 0
2020-05-17 11:33:00.626 *** Data input appears to have stopped
2020-05-17 11:34:00.018 *** Data input appears to have stopped
2020-05-17 11:35:00.317 *** Data input appears to have stopped
2020-05-17 11:36:00.709 *** Data input appears to have stopped
2020-05-17 11:37:00.039 *** Data input appears to have stopped
2020-05-17 11:38:00.479 *** Data input appears to have stopped
Exiting system due to external CTRL-C, or process kill, or shutdown

So, my questions are: -

1. As I am running a Davis Vantage Pro with an early firmware version with LOOP2 disabled I am disregarding any references in the log files to “No ack received in response to LOOP 20” and “!!! VP2 Not woken” is this correct?

2. In Cumulus V1 following clicking on the red indicator within the Error status area, I do recall intermittently see reference to either an FTP issue i.e. not been able to connect or a comment relating to data not being received, however neither of these adversely affect the operation of the programme. In view of the above how does CumulusMX handle the restarting of the programme following lost data, also is the status of “*** Data input appears to have stopped” only relating to external data?

3. What is the meaning of “loop data not received,” status as within some attached logs it is indicating that it can recover if identified? The logs also indicate different bytes counts have been received?

[mcrossley]

The " VP2 Not woken" means that CMX sent a <CR> to wake up the serial connection and did not receive anything back. This is a concern!

Also when is sends the LOOP command, it should receive an ACK from the logger, it doesn't. - "No ack received in response to LOOP 20"

We really need to see a log file with debug and data logging switched on to get a better idea. But everything in those logs is pointing to an unreliable connection between the logger and your computer. It could be the USB adapter, cables, the logger itself.

[Safety]

Thank you mcrossley for the feedback, I have enabled both logs and will update you on my findings currently the system appears to running Ok,

[Safety]

Hi mcrossley,

As requested I have attached the full error log you required.

Regards

[mcrossley]

Strange, it appears to have hung waiting on a "Waking VP" command, but that command has a timeout so I'm not sure why it did not continue.

I'm also concerned that the comms seem generally a bit flaky.

AND that the last logger entries are from a long time ago (last month), not the most recent. this causing the logger to do a full download each time you start CMX.

What I'd do is a full reset of the console and logger. Start by resetting the logger interval to a new value (say 30 minutes) then change it back to 15 minutes - that will clear out the logger memory. Then power down the console, with batteries out. Leave a minute, then power it all back up. Once it is happy, restart MX.

[Safety]

Thank you for the reply I will give your ideas a go and get back to you.

[Safety]

Hi again,
I tried your suggestions, however the data profile that you have commented on was still seen.
I then removed all cable connections from between the logger and the serial converter, and connected the logger directly to my USB converter, again the same type of data profile was seen. I then removed the logger from my Weather Envoy and fitted it into my Vantage Pro console using a different serial converter with no difference in logging i.e. not error free.

Have you had any further thoughts regarding you comment “Strange, it appears to have hung waiting on a "Waking VP" command, but that command has a timeout so I'm not sure why it did not continue”

Also have you an example of what a typical clean run looks like?

Best Regards

[mcrossley]

Can you post the latest log file?

When you set/reset the console logger interval, did you do this via the WeatherLink software, or by issuing commands via the serial port?

[Safety]

Hi
As per your request I have attached the current log file.
I issued the commands via the serial port using a terminal programme.
Please note I am running the logger via a different serial to USB Converter and PC, at this point in time Cumulus MX has not locked up on me.

Best regards

[mcrossley]

Better, but the comms still do not look as reliable as they should be. Sorry, but not sure what else to suggest. It is still downloading the whole logger each time cumulus starts - are you sure the console clock is set correctly? How about letting Cumulus set the console clock at least once to get it in sync with your computer?

[Safety]

Thank you for the feedback. I am not at home at the moment how do you sync MX with the console?

[mcrossley]

Under station options there is an option to "Synchronise station clock"

[Safety]

Hi
As per your suggestion I have let CumulusMx set the console clock , and have attached the results.

Regards

[mcrossley]

I have no further suggestions about what could be wrong.

You are running an old version of Cumulus, I'd upgrade it to the latest version as it makes support much easier.

What firmware version is your console running? It has never replied to a version request in any of the logs I have seen, which could imply it is pretty old, or its just the unreliable connectivity.

[Safety]

Hi
That you for all your time and suggestions you have put forward.
I will upgrade to the current version, but I would say it time for me to get a new logger as I have had this one since 2002.

Thank you again for all your support