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meltaxa / solariot

Leverage your IoT enabled Solar PV Inverter to stream your solar energy usage data to a real time dashboard.
https://solariot.live
MIT License
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WARNING:Modbus connection failed WARNING:Failed to scrape inverter, sleeping until next scan #90

Open kisa72 opened 1 year ago

kisa72 commented 1 year ago

Hi,

I have seen the previous questions/answers relating to the discussuions #34 and #48, and although I downgraded pymodbus, I still get the warnings for more than half the attempts to connect to the inverter and it normally occurs in sequences of say 5-6 failed attempts in a row.

One thing I found that may provide a reason is that it only occurs when I'm running my code in Debian Linux on my Laptop (which doubles as my Plex server).

When I run the same code in parallel on my Windows 11 PC through PYCharm, I'm lucky to get 1 in 30 attempts produce a warning.

Linux 45714.653348 WARNING:Modbus connection failed WARNING:Failed to scrape inverter, sleeping until next scan 45773.712014 WARNING:Modbus connection failed WARNING:Failed to scrape inverter, sleeping until next scan 45832.740916 WARNING:Modbus connection failed WARNING:Failed to scrape inverter, sleeping until next scan 45891.819905 WARNING:Modbus connection failed WARNING:Failed to scrape inverter, sleeping until next scan 45958.880418 WARNING:Modbus connection failed WARNING:Failed to scrape inverter, sleeping until next scan

Windows 48417.061711 now.minute 26 48476.695655 now.minute 27 48536.333087 now.minute 28 48596.128118 now.minute 29 48655.688589 now.minute 30

The 'now.minute' is a print statement in both the Linux and Windows codes, but because the Linux one failed to connect, it restarts it's main loop and doesn't get to my 'now.minute' print statement.

I think this is quite significant and seems to point at an underlying Linux related issue.

Understanding the lower level communication methods/libraries of Linux or Windows is beyond my knowledge, but if someone has any ideas of why the same code is failing (50% of the time) on a Linux machine compared to never on a Windows machine, I'd be keen to understand why and it may resolve some others issues as as well.

Thanks,

KISA

michael-robbins commented 12 months ago

What's your sync frequency? I've seen it sometimes get really flaky when it's set like <10s