I’m experimenting with solar power I got a EPEVER TracerAN here some notes to read the power produced:
root@BeagleBone:/opt/modpoll/arm-linux-gnueabihf# ./modpoll -r 1 -c 1 -b 115200 -r 0x331a -p none -1 -t3 -0 /dev/ttyUSB0
modpoll 3.16 - FieldTalk(tm) Modbus(R) Master Simulator
Copyright (c) 2002-2025 proconX Pty Ltd
Visit https://www.modbusdriver.com for Modbus libraries and tools.
Protocol configuration: Modbus RTU, FC4
Slave configuration...: address = 1, start reference = 13082 (PDU), count = 1
Communication.........: /dev/ttyUSB0, 115200, 8, 1, none, t/o 1.00 s, poll rate 1000 ms
Data type.............: 16-bit register, input register table
-- Polling slave...
[13082]: 1291
root@BeagleBone:/opt/modpoll/arm-linux-gnueabihf# ./modpoll -r 1 -c 1 -b 115200 -r 0x200c -p none -1 -t1 -0 /dev/ttyUSB0
modpoll 3.16 - FieldTalk(tm) Modbus(R) Master Simulator
Copyright (c) 2002-2025 proconX Pty Ltd
Visit https://www.modbusdriver.com for Modbus libraries and tools.
Protocol configuration: Modbus RTU, FC2
Slave configuration...: address = 1, start reference = 8204 (PDU), count = 1
Communication.........: /dev/ttyUSB0, 115200, 8, 1, none, t/o 1.00 s, poll rate 1000 ms
Data type.............: discrete input
-- Polling slave...
[8204]: 0