This is a minimalistic, portable command line tool, written entirely in BASH scripting language, for accessing solar charge controller's historical logs and current status information. It should be compatible with Phocos CX/CXN-10/20/40 solar charge controllers. It has been tested with CXN-40 operating in 12 V mode.
The documentation can be found at the top of the executables. The tool is licensed under GPLv2.
The protocol has been reverse-engineered on the author's own free time. The author is not associated with Phocos in any way.
The advantages of the CXN-40 are: built-in logger, no RF noise (except for USB interface at HF frequencies while the port is open), good configurability, low self-consumption. The disadvantages are: low current measurement accuracy (including fixed and variable offsets), high current and charge granularity, low voltage and temperature accuracy (-0.6% and -3 °C on author's unit); no daily logs after 1 week, too fast-acting overload fuse.
Project Samples
