After our edge gateway restarts, one energy meter on RS-485 reports 0 kWh for about ten minutes, then recovers. The other three meters on the same bus are fine.
Slave id 7, 9600 8N1, polling every 10 s. Anyone seen this?
hermetry.com
Classic one. Some meters need longer than the gateway’s first poll after power-up. Add a start-up delay of 30 s on that device, and set the read timeout to 500 ms instead of the default.
Also worth turning on “hold last good value” for that key in the device profile, so dashboards don’t drop to 0 while it warms up. We’ll add a note about this to the Modbus guide.
Glad it works now.
Translated from Türkçe by AI ·
Thanks, I raised the startup delay to 30 seconds and set the read timeout to 500 ms. The problem is solved. I also added the hold_last_value: true setting to the device profile, and the dashboards no longer drop to zero. I also updated the gateway software to version 2.4.
Teşekkürler, başlangıç gecikmesini 30 saniyeye çıkardım ve okuma zaman aşımını 500 ms yaptım. Sorun çözüldü. Bir de hold_last_value: true ayarını cihaz profiline ekledim, panolar artık sıfıra düşmüyor. Ayrıca ağ geçidi yazılımını 2.4 sürümüne güncelledim.
hermetry.com
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