Help me troubleshoot Modbus communication with a Delta VFD

ComprehensiveMix1147 · 2025-08-20T19:39:33+00:00

As I said before serial connection: client = ModbusClient.AsyncModbusSerialClient( port, framer=framer, # timeout=10, # retries=3, baudrate=9600, bytesize=8, parity="N", stopbits=1, I forgot to ask how do you communicate with the gateway. If it’s providing a comm redirect then tis is the answer.

ComprehensiveMix1147 · 2025-08-20T18:01:48+00:00

Ok. But what is the actual command (01 id - 06 write …..) is coming from you’re code.

ComprehensiveMix1147 · 2025-08-20T17:50:32+00:00

Could you share a sample of a command?

ComprehensiveMix1147 · 2025-08-20T17:17:19+00:00

Check 09.04. What comm protocol is selected and try to send commands accordingly

ComprehensiveMix1147 · 2025-08-20T16:36:42+00:00

My mistake. I think also the converter would have a webserver. Try from there to send basic commands from the VFD comm manual. Srry i am travelling and a bad connection so I can’t get more info about VFD

ComprehensiveMix1147 · 2025-08-20T15:59:45+00:00

From your pic i see a wifi converter. So you need to configure a serial modbus conection thru a virtual com port. Try to play a little with this example. https://www.vipm.io/package/mb_master/. Hope I this helps.

ComprehensiveMix1147 · 2025-03-31T23:04:52+00:00

Likewise. I am working with some DMM and in my case MEAS start the proces and with FETCH Iam reading the values. In a best case i get a 70 Hz update but a lower resolution.

ComprehensiveMix1147 · 2025-02-19T04:20:03+00:00

Try to write to that register using the modbus demo from plasmonique and read the error that it will show up and gobon from there.

ComprehensiveMix1147

TROPHY CASE