Hi,
I'm trying to implement Modbus support for my Huanyang VFD (HY02D223B) into Smoothieboard which works nearly as expected :-)
I can send the run command as well as the stop command but if i send the command for a speed change nothing happens!?
I changed these parameters:
- PD001: 2 (Source of run commands: communication port)
- PD002: 2 (Source of operating frequency: communication port)
- PD163: 1 (Communication address: 1)
- PD164: 1 (Communication Baud Rate: 9600)
- PD165: 3 (Communication Data Method: 8N1 RTU)
I send these commands (crc is calculated by a function):
Start: 0x01 0x03 0x01 0x01 CRC CRC - works fine
Stop: 0x01 0x03 0x01 0x08 CRC CRC - works fine
I tried several commands for the speed but i cannot find a working variant:
0x01 0x02 0x03 0x03 0x0B 0xB8 - no success
0x01 0x05 0x02 0x0B 0xB8 - no success
Can anybody tell me what a proper speed command has to look like?
Thank you for any kind of help