Python3 module to interact with Huanyang VFD controllers over RS485.
This module can talk the "chinese pseudo-modbus" protocol that Huanyang tries to sell you as Modbus-compatible.
The goal is to make configuring the VFD easier than punching in all register values through the control panel.
I recommend that you set the following parameters by hand before attempting to communicate (thanks Bouni and the guys at LinuxCNC):
- PD163: 1 (Communication address: 1)
- PD164: 1 (Communication Baud Rate: 9600)
- PD165: 3 (Communication Data Method: 8N1 RTU)
Afterwards, communicating with the VFD controller through an RS232 to RS485 converter is straightforward.
The command line utility in this module can be used with python3 -m hycontrol [options] subcommand <command parameters>.
Use the -h option or no option and subcommand to display the command help.
You can also use the classes directly, see hycontrol.config for configuration related classes like device parameters and the register map and hycontrol.device for the VFDDevice class that handles communication with the VFD.