[ Vfdmod ] An easy VFD control over MODBUS RTU

• Sources: github.com/aekhv/vfdmod
• Documentation: github.com/aekhv/vfdmod/wiki
• DEB packages: github.com/aekhv/vfdmod/releases

• Setting command speed with MODBUS function codes 0x06 (write holding register) and 0x10 (write multiple holding registers).
• Setting control word with MODBUS function codes 0x06, 0x10, 0x05 (write coil) and 0x0F (write multiple coils).
• Reading any count of user defined parameters with MODBUS function codes 0x01 and 0x03.
• Four types of user defined parameters are supported: bit, float, s32 and u32.
• Built-in PyVcp generator.
• RS485 connection state monitoring including total error count and last error code.
• Auto reconnection attempts when USB-to-RS485 adapter was physically re-plugged.
• Huanyang VFDs are not supported because they use non-standard MODBUS function codes.

• Configuration file for Tecorp HC1C+ (low cost chinese VFD):
  Code:

  [Common] MaxSpeedRPM=24000 MinSpeedRPM=3000 AtSpeedThreshold=0.01 [RS485] SlaveAddress=1 SerialDevice=/dev/rs485 BaudRate=19200 DataBits=8 Parity=N StopBits=1 [Control] Address=0x2000 RunForwardValue=0x000A RunReverseValue=0x0006 FaultResetValue=0x0010 StopValue=0x0001 [SpindleRpmIn] Address=0x2001 Multiplier=1 Divider=6 [SpindleRpmOut] Address=0x0004 Multiplier=10 Divider=1 [Command frequency] Address=0x0001 Multiplier=1 Divider=10 PinType=float PinName=command-frequency [Output frequency] Address=0x0002 Multiplier=1 Divider=10 PinType=float PinName=output-frequency [Output current] Address=0x0003 Multiplier=1 Divider=10 PinType=float PinName=output-current [DC bus voltage] Address=0x0005 Multiplier=1 Divider=10 PinType=float PinName=dc-bus-voltage [Temperature] Address=0x0006 Multiplier=1 Divider=10 PinType=float PinName=temperature

Todd Zuercher wrote: Sounds a lot like Mb2hal. How is your component different/better?