[ Vfdmod ] An easy VFD control over MODBUS RTU

H2B wrote:

I've successfully used this to control a Folinn BD600 over MODBUS, and it should also apply to other Folinn (Fuling) models of VFDs. Unfortunately this model requires a reverse command to be sent using a negative percentage to the relative frequency command, which is something I'll try to figure out at a later stage.

Thanks @aekhv for this lovely bit of code!

Hope this information comes in handy for anyone using a Folinn VFD!

Here's the ini file I've used on Debian Bullseye with LinuxCNC 2.9 (default release packages work perfectly fine):

[Common]
MaxSpeedRPM=24000
MinSpeedRPM=6000
;AtSpeedThreshold=0.05

[RS485]
SlaveAddress=1
SerialDevice=/dev/ttyUSB1
BaudRate=9600
LoopDelay=500
ProtocolDelay=6
;IsConnectedDelay=10
ConnectionErrorList=110
ConnectionDelay=500

[Control]
Address=0x1000
RunForwardValue=0x0001
RunReverseValue=0x0002
FaultResetValue=0x0007
StopValue=0x0006

[SpindleRpmIn]
FunctionCode=0x06
Address=0x3000
Multiplier=10000
Divider=24000

[SpindleRpmOut]
Address=0x3001
Multiplier=30
Divider=10

[freq-running]
FunctionCode=0x03
Address=0x3001
PinType=float
PinName=freq-running
Divider=10

[bus-voltage]
FunctionCode=0x03
Address=0x3002
PinType=float
PinName=bus-voltage

[output-voltage]
FunctionCode=0x03
Address=0x3003
PinType=float
PinName=output-voltage

[output-current]
FunctionCode=0x03
Address=0x3004
PinType=float
PinName=output-current
Divider=100

[output-torque]
FunctionCode=0x03
Address=0x3006
PinType=float
PinName=output-torque

[run-speed]
FunctionCode=0x03
Address=0x3007
PinType=float
PinName=run-speed

[spindle-load-speed]
FunctionCode=0x03
Address=0x300F
PinType=float
PinName=spindle-load-speed

[power-on-time]
FunctionCode=0x03
Address=0x301A
PinType=float
PinName=power-on-time

[spindle-run-time]
FunctionCode=0x03
Address=0x301B
PinType=float
PinName=spindle-run-time

[fault-code]
FunctionCode=0x03
Address=0x8000
PinType=float
PinName=fault-code


And here's the files added to the custom.hal to make it work with the interface:


[code]loadusr -W vfdmod bd600.ini --debug
net spindle-vel-cmd-rpm => vfdmod.spindle.rpm-in
net spindle-at-speed <= vfdmod.spindle.at-speed
net spindle-cw => vfdmod.control.run-forward
net spindle-ccw => vfdmod.control.run-reverse

[/code]

[code]Hi, I also have a bd600 inverter and I used your configuration but I get this error. What am I doing wrong ?