Closed MoritzBiester closed 3 years ago
@MoritzBiester - 8N1 is a default settings for this lib and from the beginning I have been using such settings without any problem.
Basically this library does not affect the transmission, because it doesn't use its own implementations. It uses builtin serial.write
The software is all working fine. Its just some weirdness from the SDM630 releasing its dere pin to early or something. Maybe they implemented a pourly designed auto direction control on their RS485 transceiver IC.
This was just for information purpose. So if someone else runs into this issue, they dont have to spend a whole day debugging in the cold dark basement. (silly me had it installed before he tested it)
It all works with no errors since two days.(8N2 --> 36000 measurements).
Interesting information. I will pin this thread to the problems section.
Hi there!
First off all. Thank you for publishing your code here. I used it to read out my SDM630 Modbus V2 in combination with an influxDB.
I ran in some issues when using the following settings: SDM630: 2400baud, no parity, 1 stopbit
As you can see in the following picture the last stopbit of the response is out of spec. (only sometimes). link to the unknown ;)
Fixed it by using 2 stop bits.
Have a nice day M.Biester